Remove special handling of test_ apexes

Test apexes no longer check to see whether their contents are available
so the special handling is no longer necessary.

Bug: 142935992
Bug: 153306490
Test: m nothing
Merged-In: Iecae7dcbb87908d19c672f74d3c1ed8810d4485b
Change-Id: Iecae7dcbb87908d19c672f74d3c1ed8810d4485b
diff --git a/apex/apex.go b/apex/apex.go
index 894439f..a7e4c35 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -2184,8 +2184,6 @@
 
 func whitelistedApexAvailable(apex, moduleName string) bool {
 	key := apex
-	key = strings.Replace(key, "test_", "", 1)
-
 	// Prebuilt modules (e.g. java_import, etc.) have "prebuilt_" prefix added by the build
 	// system. Trim the prefix for the check since they are confusing
 	moduleName = strings.TrimPrefix(moduleName, "prebuilt_")