Simplify aconfig_declarations_group

Some of the getters were unused, which means that all the fields
could be made into local variables.

Test: m nothing --no-skip-soong-tests
Change-Id: Iea38ed7f9da952803f54194c0c5a8fda9b6007f5
diff --git a/aconfig/codegen/java_aconfig_library.go b/aconfig/codegen/java_aconfig_library.go
index 9f42e21..673ac2a 100644
--- a/aconfig/codegen/java_aconfig_library.go
+++ b/aconfig/codegen/java_aconfig_library.go
@@ -15,8 +15,6 @@
 package codegen
 
 import (
-	"fmt"
-
 	"android/soong/android"
 	"android/soong/java"
 
@@ -80,7 +78,7 @@
 	// Get the values that came from the global RELEASE_ACONFIG_VALUE_SETS flag
 	declarationsModules := ctx.GetDirectDepsWithTag(declarationsTag)
 	if len(declarationsModules) != 1 {
-		panic(fmt.Errorf("Exactly one aconfig_declarations property required"))
+		panic("Exactly one aconfig_declarations property required")
 	}
 	declarations, _ := android.OtherModuleProvider(ctx, declarationsModules[0], android.AconfigDeclarationsProviderKey)
 
@@ -133,10 +131,6 @@
 	return srcJarPath, declarations.IntermediateCacheOutputPath
 }
 
-func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) AconfigDeclarations() *string {
-	return proptools.StringPtr(callbacks.properties.Aconfig_declarations)
-}
-
 func isModeSupported(mode string) bool {
 	return android.InList(mode, aconfigSupportedModes)
 }