Remove redundant cleanup steps from update scripts (#9359)

ct/emqx.sh

@@ -47,16 +47,13 @@ function update_script() {
 
     msg_info "Installing EMQX"
     $STD apt-get install -y "$DEB_FILE"
+    rm -f "$DEB_FILE"
+    echo "$RELEASE" >~/.emqx
     msg_ok "Installed EMQX v${RELEASE}"
 
     msg_info "Starting EMQX"
     systemctl start emqx
-    echo "$RELEASE" >~/.emqx
     msg_ok "Started EMQX"
-
-    msg_info "Cleaning Up"
-    rm -f "$DEB_FILE"
-    msg_ok "Cleanup Completed"
     msg_ok "Updated successfully!"
   else
     msg_ok "No update required. EMQX is already at v${RELEASE}"