Remove [local_]include_files

We don't actually need to do any changes to the path for the include
files, so we can just rely on the include_dir search to work.

It would still be useful to verify that the path isn't something bad,
like an absolute path, but we'll handle that by looking at the cflags in
another change.

Change-Id: I0bd609435969191c4ff91f2cd06eccfb75f5097c
diff --git a/cc/cc.go b/cc/cc.go
index a828d10..9cdd66c 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -269,20 +269,10 @@
 	// that module.
 	Include_dirs []string `android:"arch_variant"`
 
-	// list of files relative to the root of the source tree that will be included
-	// using -include.
-	// If possible, don't use this.
-	Include_files []string `android:"arch_variant"`
-
 	// list of directories relative to the Blueprints file that will
 	// be added to the include path using -I
 	Local_include_dirs []string `android:"arch_variant"`
 
-	// list of files relative to the Blueprints file that will be included
-	// using -include.
-	// If possible, don't use this.
-	Local_include_files []string `android:"arch_variant"`
-
 	// list of generated sources to compile. These are the names of gensrcs or
 	// genrule modules.
 	Generated_sources []string `android:"arch_variant"`
@@ -1037,13 +1027,6 @@
 		includeDirsToFlags(localIncludeDirs),
 		includeDirsToFlags(rootIncludeDirs))
 
-	rootIncludeFiles := android.PathsForSource(ctx, compiler.Properties.Include_files)
-	localIncludeFiles := android.PathsForModuleSrc(ctx, compiler.Properties.Local_include_files)
-
-	flags.GlobalFlags = append(flags.GlobalFlags,
-		includeFilesToFlags(rootIncludeFiles),
-		includeFilesToFlags(localIncludeFiles))
-
 	if !ctx.noDefaultCompilerFlags() {
 		if !ctx.sdk() || ctx.Host() {
 			flags.GlobalFlags = append(flags.GlobalFlags,