pop the item "Host" in the efficient way

Use `headers.pop("Host", None)` instead of a `if` statement.

Signed-off-by: 黃昕暐 <[email protected]>

Author: codemee

python-ecosys/requests/requests/__init__.py

@@ -181,8 +181,7 @@ def request(
     if redirect:
         s.close()
         # use the Host in the redirect URL
-        if "Host" in headers:
-            headers.pop("Host")
+        headers.pop("Host", None)
         if status in [301, 302, 303]:
             return request("GET", redirect, None, None, headers, stream)
         else: