Reduce verbiage of lit.local.cfg files
We can just split targets_to_build in one place and make it immutable.
llvm-svn: 210496
diff --git a/llvm/test/tools/llvm-readobj/ARM/lit.local.cfg b/llvm/test/tools/llvm-readobj/ARM/lit.local.cfg
index 8a3ba96..98c6700 100644
--- a/llvm/test/tools/llvm-readobj/ARM/lit.local.cfg
+++ b/llvm/test/tools/llvm-readobj/ARM/lit.local.cfg
@@ -1,4 +1,3 @@
-targets = set(config.root.targets_to_build.split())
-if not 'ARM' in targets:
+if not 'ARM' in config.root.targets:
config.unsupported = True