Drop "prebuilt_" prefixes from names registered in ApexInfo.InApexXxx.

Neither InApexVariants nor InApexModules should have them. This allows
us to get rid of InApexVariantByBaseName as well.

Test: m nothing
Test: m nothing SOONG_CONFIG_art_module_source_build=false
Bug: 180325915
Change-Id: Icbe4e025ce1a4c8dd258ff95d326ca2f27905188

java/hiddenapi_singleton.go

@@ -171,7 +171,7 @@ func isModuleInConfiguredList(ctx android.BaseModuleContext, module android.Modu
 			// A platform variant is required but this is for an apex so ignore it.
 			return false
 		}
-	} else if !apexInfo.InApexVariantByBaseName(requiredApex) {
+	} else if !apexInfo.InApexVariant(requiredApex) {
 		// An apex variant for a specific apex is required but this is the wrong apex.
 		return false
 	}