Remove calls to gc.collect in ConnectionState

For some bots this was actually a performance bottleneck, might as
well remove it if it causes bad performance

discord/state.py

@@ -32,7 +32,6 @@ from typing import Dict, Optional
 import weakref
 import warnings
 import inspect
-import gc
 
 import os
 
@@ -215,11 +214,6 @@ class ConnectionState:
         self._private_channels_by_user = {}
         self._messages = self.max_messages and deque(maxlen=self.max_messages)
 
-        # In cases of large deallocations the GC should be called explicitly
-        # To free the memory more immediately, especially true when it comes
-        # to reconnect loops which cause mass allocations and deallocations.
-        gc.collect()
-
     def process_chunk_requests(self, guild_id, nonce, members, complete):
         removed = []
         for key, request in self._chunk_requests.items():
@@ -332,10 +326,6 @@ class ConnectionState:
 
         del guild
 
-        # Much like clear(), if we have a massive deallocation
-        # then it's better to explicitly call the GC
-        gc.collect()
-
     @property
     def emojis(self):
         return list(self._emojis.values())
@@ -1396,14 +1386,6 @@ class AutoShardedConnectionState(ConnectionState):
         self.dispatch('connect')
         self.dispatch('shard_connect', data['__shard_id__'])
 
-        # Much like clear(), if we have a massive deallocation
-        # then it's better to explicitly call the GC
-        # Note that in the original ready parsing code this was done
-        # implicitly via clear() but in the auto sharded client clearing
-        # the cache would have the consequence of clearing data on other
-        # shards as well.
-        gc.collect()
-
         if self._ready_task is None:
             self._ready_task = asyncio.create_task(self._delay_ready())