remove gconf usage. It's not used anymore

src/command_system/implementation/middleware.py

@@ -38,7 +38,6 @@ from common import gajim
 
 from ..framework import CommandProcessor
 from ..errors import CommandError, NoCommandError
-from ..tools import gconf
 
 class ChatCommandProcessor(CommandProcessor):
     """
@@ -114,8 +113,7 @@ class CommandTools:
     def install_tags(self):
         buffer = self.conv_textview.tv.get_buffer()
 
-        name = gconf("/desktop/gnome/interface/monospace_font_name")
-        name = name if name else "Monospace"
+        name = "Monospace"
         font = Pango.FontDescription(name)
 
         command_ok_tag = buffer.create_tag("command_ok")

src/command_system/tools.py

@@ -33,11 +33,3 @@ def remove(sequence, target):
     elif isinstance(sequence, dict):
         if target in sequence:
             del sequence[target]
-
-def gconf(path):
-    try:
-        from gi.repository import GConf
-        client = GConf.Client.get_default()
-        return client.get_string(path)
-    except ImportError:
-        pass