llvm-isel-fuzzer: Use the right REQUIRES line for r315599

I'd mixed up ENABLE_SHARED and BUILD_SHARED_LIBS before, so these
tests were being disabled in too many places.

llvm-svn: 315646
diff --git a/llvm/test/tools/llvm-isel-fuzzer/aarch64-execname-options.ll b/llvm/test/tools/llvm-isel-fuzzer/aarch64-execname-options.ll
index c713ee1..961fd22 100644
--- a/llvm/test/tools/llvm-isel-fuzzer/aarch64-execname-options.ll
+++ b/llvm/test/tools/llvm-isel-fuzzer/aarch64-execname-options.ll
@@ -1,7 +1,6 @@
 ; If the binary looks up libraries using an rpath, we can't test this
 ; without copying the whole lib dir or polluting the build dir.
-; UNSUPPORTED: rpath_in_use
-
+; REQUIRES: static-libs
 ; REQUIRES: aarch64-registered-target
 
 ; RUN: echo > %t.input