remove SSAOPass.quad.dispose, fixes #18148

examples/jsm/postprocessing/SSAOPass.js

@@ -183,10 +183,6 @@ SSAOPass.prototype = Object.assign( Object.create( Pass.prototype ), {
 		this.ssaoRenderTarget.dispose();
 		this.blurRenderTarget.dispose();
 
-		// dispose geometry
-
-		this.quad.geometry.dispose();
-
 		// dispose materials
 
 		this.normalMaterial.dispose();