Remove LOCAL_CTS_GTEST_LIST_EXECUTABLE

The one user has now been removed, so this is no longer necessary.

Test: None
Change-Id: I8fb9e7b90f664af616368685d81f8b10d0687306
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 1d927b0..faf18e3 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -376,7 +376,6 @@
 LOCAL_MODULE_SYMLINKS_32:=
 LOCAL_MODULE_SYMLINKS_64:=
 LOCAL_JAVA_LANGUAGE_VERSION:=
-LOCAL_CTS_GTEST_LIST_EXECUTABLE:=
 
 LOCAL_IS_AUX_MODULE :=
 LOCAL_AUX_TOOLCHAIN :=