Fix bug with rtt

dist/preview release/babylon.max.js

@@ -45568,12 +45568,6 @@ var BABYLON;
             this._currentRefreshId++;
             return false;
         };
-        RenderTargetTexture.prototype.isReady = function () {
-            if (!this.getScene().renderTargetsEnabled) {
-                return false;
-            }
-            return _super.prototype.isReady.call(this);
-        };
         RenderTargetTexture.prototype.getRenderSize = function () {
             return this._size;
         };

dist/preview release/customConfigurations/minimalGLTFViewer/babylon.max.js

@@ -33163,12 +33163,6 @@ var BABYLON;
             this._currentRefreshId++;
             return false;
         };
-        RenderTargetTexture.prototype.isReady = function () {
-            if (!this.getScene().renderTargetsEnabled) {
-                return false;
-            }
-            return _super.prototype.isReady.call(this);
-        };
         RenderTargetTexture.prototype.getRenderSize = function () {
             return this._size;
         };

src/Materials/Textures/babylon.renderTargetTexture.ts

@@ -248,13 +248,6 @@
             return false;
         }
 
-        public isReady(): boolean {
-            if (!this.getScene().renderTargetsEnabled) {
-                return false;
-            }
-            return super.isReady();
-        }
-
         public getRenderSize(): number {
             return this._size;
         }