[test] Cleanup superfluous test skips

Bug: None
Change-Id: I8cf2e4b651c0ccb784a5d668656cbfcd573b271d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3878450Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Feng Yu <f3n67u@gmail.com>
Cr-Commit-Position: refs/heads/main@{#83048}

test/unittests/unittests.status

@@ -276,7 +276,6 @@
 ['lite_mode or variant == jitless', {
 
   # Tests that generate code at runtime.
-  'CodeGenTest.*': [SKIP],
   'CodePagesTest.*': [SKIP],
   'MacroAssemblerX64Test.EmbeddedObj': [SKIP],
   'RegExpTest.MacroAssemblernativeAtStart': [SKIP],
@@ -330,10 +329,4 @@
   'RegExpTestWithContext.UnicodePropertyEscapeCodeSize': [SKIP],
 }],  # no_i18n == True
 
-##############################################################################
-['variant == nooptimization', {
-  # %ObserveNode tests rely on TurboFan.
-  'SloppyEqualityTest.*' : [SKIP],
-}],  # variant == nooptimization
-
 ]