Revert^2 "[strip.sh] Move remaining GNU binutils usage to llvm binutils"

This reverts commit 33dfba1d9c06723c4decf2b38705c3fa7ef4f198.

Bug: 141010852
Test: art/test.py -t 137-cfi
Test: llvm-objcopy --dump-section=.gnu_debugdata=mdi.xz libhwui.so && \
      unxz -fk mdi.xz && readelf -a mdi | less
Change-Id: I751b51274a961194647ec11fd3fd49886df1e1b3
diff --git a/cc/builder.go b/cc/builder.go
index 8c9743f..da8501c 100644
--- a/cc/builder.go
+++ b/cc/builder.go
@@ -132,7 +132,7 @@
 		blueprint.RuleParams{
 			Depfile:     "${out}.d",
 			Deps:        blueprint.DepsGCC,
-			Command:     "CROSS_COMPILE=$crossCompile XZ=$xzCmd CLANG_BIN=${config.ClangBin} $stripPath ${args} -i ${in} -o ${out} -d ${out}.d",
+			Command:     "XZ=$xzCmd CLANG_BIN=${config.ClangBin} $stripPath ${args} -i ${in} -o ${out} -d ${out}.d",
 			CommandDeps: []string{"$stripPath", "$xzCmd"},
 			Pool:        darwinStripPool,
 		},