Unskip mjsunit/compiler/regress-9017 in is_full_debug

The test was originally skipped due to slowness. This might have been
fixed by reduced store-store zone allocations (see the linked bug).

Locally, this now runs in less than 20 seconds in full x64 debug mode.

The largest zone is < 100MB:

12089344, "V8.TFAllocateGeneralRegisters"
21954208, "graph-zone"
26181688, "../../src/compiler/verifier.cc:2000"
57895456, "instruction-zone"
98933872, "register-allocation-zone"

Drive-by: Remove tsan SLOW annotation, it's already marked SLOW in the
ALWAYS block.

Bug: v8:9572
Change-Id: Ic3ffd3de732e262f412f1d7a66448ea7228582f2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1889872
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64641}

test/mjsunit/mjsunit.status

@@ -417,7 +417,6 @@
 ##############################################################################
 ['is_full_debug', {
   # Tests too slow in non-optimized debug mode.
-  'compiler/regress-9017': [SKIP],
   'regress/regress-2790': [SKIP],
   'regress/regress-331444': [SKIP],
   'regress/regress-740784': [SKIP],
@@ -612,7 +611,6 @@
   'es6/large-classes-properties': [SKIP],
 
   # Slow tests.
-  'compiler/regress-9017': [PASS, SLOW],
   'es6/block-conflicts-sloppy': [PASS, SLOW],
   'math-floor-part1': [PASS, SLOW],
   'regress/regress-500980': [PASS, SLOW],