DEV: Delete an old `appEvents.off` call (#14930)

DEV: Delete an old appEvents.off call (#14930)

There’s no composer:resize anymore.

diff --git a/app/assets/javascripts/discourse/app/components/composer-body.js b/app/assets/javascripts/discourse/app/components/composer-body.js
index 3eb7350..035da95 100644
--- a/app/assets/javascripts/discourse/app/components/composer-body.js
+++ b/app/assets/javascripts/discourse/app/components/composer-body.js
@@ -207,7 +207,6 @@ export default Component.extend(KeyEnterEscape, {
 
   willDestroyElement() {
     this._super(...arguments);
-    this.appEvents.off("composer:resize", this, this.resize);
     if (this._visualViewportResizing()) {
       window.visualViewport.removeEventListener("resize", this.viewportResize);
     }

GitHub sha: b1c72282c904b013dfd5b542d360669760590da3

This commit appears in #14930 which was approved by martin. It was merged by CvX.