Revert "Un-blacklist 080-oom-fragmentation for non-GSS configurations."

This reverts commit b0d5cc60f2200e4f76d732250fca97c6b080d2df.

Reason for revert: Test is failing with CC collector too.

Bug: 33795328
Change-Id: Ia1a14fe9d5f2875b2c6578909359f687c5339b5d
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 426bbaf..f0b88e9 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -13,9 +13,7 @@
     },
     {
         "tests": "080-oom-fragmentation",
-        "description": ["Disable 080-oom-fragmentation for GSS GC due to lack of",
-		        "support for allocations larger than 32MB."],
-	"env_vars": {"ART_DEFAULT_GC_TYPE": "GSS"},
+        "description": "Disable 080-oom-fragmentation due to flakes.",
         "bug": "http://b/33795328"
     },
     {