remove deprecated method (#28481)

Co-authored-by: aardgoose <[email protected]>

examples/jsm/renderers/common/Renderer.js

@@ -708,14 +708,6 @@ class Renderer {
 
 	}
 
-	getArrayBuffer( attribute ) { // @deprecated, r155
-
-		console.warn( 'THREE.Renderer: getArrayBuffer() is deprecated. Use getArrayBufferAsync() instead.' );
-
-		return this.getArrayBufferAsync( attribute );
-
-	}
-
 	async getArrayBufferAsync( attribute ) {
 
 		return await this.backend.getArrayBufferAsync( attribute );