gn2bp: Use startswith instead of regex

Test: ./update_results.sh
Change-Id: Ic85de603d6edb3565552731bac60a57961c8aecc
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 49643e1..bc429f5 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -1247,8 +1247,7 @@
   # aosp / soong builds and b) the include directory should already be
   # configured via library dependency.
   module.local_include_dirs.update([gn_utils.label_to_path(d)
-                                 for d in include_dirs
-                                 if not re.match('^//out/.*', d)])
+                                 for d in include_dirs if not d.startswith('//out')])
   # Remove prohibited include directories
   module.local_include_dirs = [d for d in module.local_include_dirs
                                if d not in local_include_dirs_denylist]