[gn] port 20d5d09e99188
diff --git a/llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn b/llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn
index 2ed60b4..a7ea1cf 100644
--- a/llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn
+++ b/llvm/utils/gn/secondary/compiler-rt/test/BUILD.gn
@@ -50,7 +50,6 @@
         rebase_path("$root_build_dir/bin/clang") + ext,
     "COMPILER_RT_TEST_COMPILER_ID=Clang",
     "Python3_EXECUTABLE=$python_path",
-    "Python3_ROOT_DIR=",  # FIXME
     "COMPILER_RT_BUILD_STANDALONE_LIBATOMIC_PYBOOL=False",
     "COMPILER_RT_DEBUG_PYBOOL=False",
     "COMPILER_RT_ENABLE_INTERNAL_SYMBOLIZER_PYBOOL=False",