[gn build] Port b51a082

Author: llvmgnsyncbot

llvm/utils/gn/secondary/llvm/unittests/Support/BUILD.gn

@@ -73,7 +73,6 @@ unittest("SupportTests") {
     "ProcessTest.cpp",
     "ProgramTest.cpp",
     "RISCVAttributeParserTest.cpp",
-    "RecyclerTest.cpp",
     "RegexTest.cpp",
     "ReplaceFileTest.cpp",
     "ReverseIterationTest.cpp",