[test] Drop testing ignition_staging

Removing it from default variants set which will substantially increase test speed for developers.

Pure ignition is intended to be tested only on bots unless opted in.

BUG=chromium:682617
R=mstarzinger@chromium.org,mvstanton@chromium.org,rmcilroy@chromium.org

Change-Id: I98adb81951a0a2d16f52e6b34b98d3a90e178d8a
Reviewed-on: https://chromium-review.googlesource.com/452580Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#43721}

tools/run-tests.py

@@ -105,7 +105,7 @@ TEST_MAP = {
 TIMEOUT_DEFAULT = 60
 
 # Variants ordered by expected runtime (slowest first).
-VARIANTS = ["ignition_staging", "default", "noturbofan"]
+VARIANTS = ["default", "noturbofan"]
 
 MORE_VARIANTS = [
   "stress",

tools/testrunner/local/variants.py

@@ -12,7 +12,6 @@ ALL_VARIANT_FLAGS = {
   "noturbofan_stress": [["--no-turbo", "--stress-opt", "--always-opt"]],
   "nocrankshaft": [["--nocrankshaft"]],
   "ignition": [["--ignition"]],
-  "ignition_staging": [["--ignition-staging"]],
   "ignition_turbofan": [["--ignition-staging", "--turbo"]],
   "asm_wasm": [["--validate-asm"]],
   "wasm_traps": [["--wasm_guard_pages", "--invoke-weak-callbacks"]],
@@ -27,7 +26,6 @@ FAST_VARIANT_FLAGS = {
   "noturbofan_stress": [["--no-turbo", "--stress-opt"]],
   "nocrankshaft": [["--nocrankshaft"]],
   "ignition": [["--ignition"]],
-  "ignition_staging": [["--ignition-staging"]],
   "ignition_turbofan": [["--ignition-staging", "--turbo"]],
   "asm_wasm": [["--validate-asm"]],
   "wasm_traps": [["--wasm_guard_pages", "--invoke-weak-callbacks"]],
@@ -35,5 +33,5 @@ FAST_VARIANT_FLAGS = {
 
 ALL_VARIANTS = set(["default", "stress", "turbofan", "turbofan_opt",
                     "noturbofan", "noturbofan_opt",
-                    "nocrankshaft", "ignition", "ignition_staging",
+                    "nocrankshaft", "ignition",
                     "ignition_turbofan", "asm_wasm", "wasm_traps"])