src/sage/interfaces/maxima_abstract.py: drop "verbose" from _commands()

This parameter was recently made obsolete, and as this is an internal
method, we can just delete it.

Author: orlitzky

src/sage/interfaces/maxima_abstract.py

@@ -293,14 +293,10 @@ def completions(self, s, verbose=True):
         return [x for x in cmd_list if x.find(s) == 0]
 
     @cached_method
-    def _commands(self, verbose=True):
+    def _commands(self):
         """
         Return list of all commands defined in Maxima.
 
-        INPUT:
-
-        - ``verbose`` -- boolean; ignored (obsolete)
-
         OUTPUT:
 
         A list of strings.
@@ -385,7 +381,7 @@ def _tab_completion(self, verbose=True, use_disk_cache=True):
                 print("\nBuilding Maxima command completion list (this takes")
                 print("a few seconds only the first time you do it).")
                 print("To force rebuild later, delete %s." % COMMANDS_CACHE)
-            v = self._commands(verbose=verbose)
+            v = self._commands()
             if verbose:
                 print("\nDone!")
             self.__tab_completion = v