Revert "Check the server end point for available completer"

This reverts commit d768447.

Fixes #1529

python/ycm/youcompleteme.py

@@ -30,9 +30,9 @@
 from ycm.diagnostic_interface import DiagnosticInterface
 from ycm.omni_completer import OmniCompleter
 from ycm import syntax_parse
+from ycmd.completers.completer_utils import FiletypeCompleterExistsForFiletype
 from ycm.client.ycmd_keepalive import YcmdKeepalive
 from ycm.client.base_request import BaseRequest, BuildRequestData
-from ycm.client.completer_available_request import SendCompleterAvailableRequest
 from ycm.client.command_request import SendCommandRequest
 from ycm.client.completion_request import CompletionRequest
 from ycm.client.omni_completion_request import OmniCompletionRequest
@@ -98,7 +98,6 @@ def __init__( self, user_options ):
     self._ycmd_keepalive.Start()
 
   def _SetupServer( self ):
-    self._available_completers = {}
     server_port = utils.GetUnusedLocalhostPort()
     # The temp options file is deleted by ycmd during startup
     with tempfile.NamedTemporaryFile( delete = False ) as options_file:
@@ -218,20 +217,8 @@ def GetOmniCompleter( self ):
     return self._omnicomp
 
 
-  def FiletypeCompleterExistsForFiletype( self, filetype ):
-    try:
-      return self._available_completers[ filetype ]
-    except KeyError:
-      pass
-
-    exists_completer = ( self.IsServerAlive() and
-                         bool( SendCompleterAvailableRequest( filetype ) ) )
-    self._available_completers[ filetype ] = exists_completer
-    return exists_completer
-
-
   def NativeFiletypeCompletionAvailable( self ):
-    return any( [ self.FiletypeCompleterExistsForFiletype( x ) for x in
+    return any( [ FiletypeCompleterExistsForFiletype( x ) for x in
                   vimsupport.CurrentFiletypes() ] )