network: remove resolver monkey-patch as no local hostname lookups are performed when

enabling SOCKS5 proxy.

electrum/util.py

@@ -1268,7 +1268,7 @@ def make_aiohttp_session(proxy: Optional[dict], headers=None, timeout=None):
             port=int(proxy['port']),
             username=proxy.get('user', None),
             password=proxy.get('password', None),
-            rdns=True,
+            rdns=True,  # needed to prevent DNS leaks over proxy
             ssl=ssl_context,
         )
     else:
@@ -1885,6 +1885,8 @@ class NetworkRetryManager(Generic[_NetAddrType]):
 
 
 class MySocksProxy(aiorpcx.SOCKSProxy):
+    # note: proxy will not leak DNS as create_connection()
+    # sets (local DNS) resolve=False by default
 
     async def open_connection(self, host=None, port=None, **kwargs):
         loop = asyncio.get_running_loop()