Add to useless buffer

uno/modules/buffer.org

@@ -42,6 +42,7 @@ Define useful and useless buffers. Borrowed from Spacemacs.
                      never (string-match-p useless-regexp buf-name)))))
     :config
     (uno/add-useless-buffer "\\*compilation\\*")
+    (uno/add-useless-buffer "\\*Completions\\*")
     (uno/add-useless-buffer "\\*Messages\\*")
     (uno/add-useless-buffer "\\*scratch\\*")
     (uno/add-useless-buffer "\\*straight-byte-compilation\\*")