rpcserver: replace DebugBuild cmp w/ IsDevBuild in AbandonChannel

rpcserver.go

@@ -1191,12 +1191,12 @@ out:
 func (r *rpcServer) AbandonChannel(ctx context.Context,
 	in *lnrpc.AbandonChannelRequest) (*lnrpc.AbandonChannelResponse, error) {
 
-	// If this isn't the debug build, then we won't allow the RPC to be
+	// If this isn't the dev build, then we won't allow the RPC to be
 	// executed, as it's an advanced feature and won't be activated in
 	// regular production/release builds.
-	if !DebugBuild {
+	if !build.IsDevBuild() {
 		return nil, fmt.Errorf("AbandonChannel RPC call only " +
-			"available in debug builds")
+			"available in dev builds")
 	}
 
 	// We'll parse out the arguments to we can obtain the chanPoint of the