Reland test part of "[Intl] Cleans up intl-relative-time-format flag"

This is a partial reland of 048a3a3e

Original change's description:
> [Intl] Cleans up intl-relative-time-format flag
>
> Cleans up always=true intl-relative-time-format flag
> It shipped in m71 in Dec 2018.
>
> Bug: v8:8704
> Change-Id: I52d86aea9aedf201a216a1df0773a486fbee37b9
> Reviewed-on: https://chromium-review.googlesource.com/c/1417299
> Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
> Commit-Queue: Frank Tang <ftang@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#58904}

Bug: v8:8704
Change-Id: Iac62a347eea7f85dd3fa4a3bbfb18091b80f9a5e
Reviewed-on: https://chromium-review.googlesource.com/c/1429224Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59081}

src/bootstrapper.cc

@@ -4572,7 +4572,6 @@ void Genesis::InitializeGlobal_harmony_intl_relative_time_format() {
                         Builtins::kRelativeTimeFormatPrototypeFormatToParts, 2,
                         false);
 }
-
 void Genesis::InitializeGlobal_harmony_intl_segmenter() {
   if (!FLAG_harmony_intl_segmenter) return;
   Handle<JSObject> intl = Handle<JSObject>::cast(

test/intl/regress-8030.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 var locales = ["tlh", "id", "en"];
 var referenceRelativeTimeFormat = new Intl.RelativeTimeFormat(locales);
 var referenceFormatted = referenceRelativeTimeFormat.format(3, "day");

test/intl/relative-time-format/constructor.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // RelativeTimeFormat constructor can't be called as function.
 assertThrows(() => Intl.RelativeTimeFormat('sr'), TypeError);
 

test/intl/relative-time-format/default-locale-fr-CA.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format --harmony-locale
 // Environment Variables: LC_ALL=fr_CA
 assertEquals(
     'fr-CA',

test/intl/relative-time-format/default-locale-pt-BR.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format --harmony-locale
 // Environment Variables: LC_ALL=pt_BR
 assertEquals(
     'pt-BR',

test/intl/relative-time-format/format-en.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // The following test are not part of the comformance. Just some output in
 // English to verify the format does return something reasonable for English.
 // It may be changed when we update the CLDR data.

test/intl/relative-time-format/format-to-parts-en.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // The following test are not part of the comformance. Just some output in
 // English to verify the format does return something reasonable for English.
 // It may be changed when we update the CLDR data.

test/intl/relative-time-format/format-to-parts-plural.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Check plural w/ formatToParts
 // http://tc39.github.io/proposal-intl-relative-time/
 

test/intl/relative-time-format/format-to-parts.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Make sure that RelativeTimeFormat exposes all required properties. Those not specified
 // should have undefined value.
 // http://tc39.github.io/proposal-intl-relative-time/

test/intl/relative-time-format/format.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // Make sure that RelativeTimeFormat exposes all required properties. Those not specified
 // should have undefined value.
 // http://tc39.github.io/proposal-intl-relative-time/

test/intl/relative-time-format/resolved-options-nu.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 // For locale default the numberingSystem to 'latn'
 assertEquals(
     "latn",

test/intl/relative-time-format/resolved-options.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
-
 let rtf = new Intl.RelativeTimeFormat();
 // Test 1.4.5 Intl.RelativeTimeFormat.prototype.resolvedOptions ()
 // The default style is 'long'

test/intl/relative-time-format/supported-locale.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-relative-time-format
 assertEquals(typeof Intl.RelativeTimeFormat.supportedLocalesOf, "function",
              "Intl.RelativeTimeFormat.supportedLocalesOf should be a function");
 

test/test262/testcfg.py

@@ -53,7 +53,6 @@ FEATURE_FLAGS = {
   'numeric-separator-literal': '--harmony-numeric-separator',
   'Intl.ListFormat': '--harmony-intl-list-format',
   'Intl.Locale': '--harmony-locale',
-  'Intl.RelativeTimeFormat': '--harmony-intl-relative-time-format',
   'Intl.Segmenter': '--harmony-intl-segmenter',
   'Symbol.prototype.description': '--harmony-symbol-description',
   'globalThis': '--harmony-global',