Fix failing tests due to fix in rules

Test: b test //prebuilts/clang/host/linux-x86:all
Change-Id: Ied6152c334b8b9a1ce6fccd588f15f3a978adec3
diff --git a/cc_toolchain_features_env_based_flags_test.bzl b/cc_toolchain_features_env_based_flags_test.bzl
index 8361df8..4ec3fec 100644
--- a/cc_toolchain_features_env_based_flags_test.bzl
+++ b/cc_toolchain_features_env_based_flags_test.bzl
@@ -130,7 +130,6 @@
         target_under_test = CC_LIB_NAME,
         expected_flags = [
             "-ftrivial-auto-var-init=zero",
-            "-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang",
             "-Wno-unused-command-line-argument",
         ],
     )
@@ -145,7 +144,6 @@
         target_under_test = CC_LIB_NAME,
         expected_flags = [
             "-ftrivial-auto-var-init=zero",
-            "-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang",
             "-Wno-unused-command-line-argument",
         ],
     )