Replace ModuleContext.AConfig() with Config()

AConfig() now duplicates Config().  Replace the uses of AConfig()
with Config().  Leave AConfig() for now until code in other
projects is cleaned up.

Test: m checkbuild
Change-Id: Ic88be643049d21dba45dbd1a65588ed94bf43bdc
diff --git a/cc/pgo.go b/cc/pgo.go
index ea23124..9fea154 100644
--- a/cc/pgo.go
+++ b/cc/pgo.go
@@ -181,7 +181,7 @@
 	//
 	// TODO Validate that each benchmark instruments at least one module
 	pgo.Properties.ShouldProfileModule = false
-	pgoBenchmarks := ctx.AConfig().Getenv("ANDROID_PGO_INSTRUMENT")
+	pgoBenchmarks := ctx.Config().Getenv("ANDROID_PGO_INSTRUMENT")
 	pgoBenchmarksMap := make(map[string]bool)
 	for _, b := range strings.Split(pgoBenchmarks, ",") {
 		pgoBenchmarksMap[b] = true
@@ -215,7 +215,7 @@
 		return props.addProfileGatherFlags(ctx, flags)
 	}
 
-	if !ctx.AConfig().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
+	if !ctx.Config().IsEnvTrue("ANDROID_PGO_NO_PROFILE_USE") {
 		return props.addProfileUseFlags(ctx, flags)
 	}