devserver: Deprecate --prox_port

This option doesn't seem to be used anywhere. It seems it was being used
for testing updates locally, but we don't do that anymore.

BUG=chromium:872441
TEST=devserver_integration_test.py

Change-Id: I969609b4ae8ce12394696285f41b437567bf33bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/2121398
Tested-by: Amin Hassani <ahassani@chromium.org>
Reviewed-by: Sanika Kulkarni <sanikak@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
Commit-Queue: Amin Hassani <ahassani@chromium.org>
diff --git a/autoupdate.py b/autoupdate.py
index 72bb1a9..cd26507 100644
--- a/autoupdate.py
+++ b/autoupdate.py
@@ -60,18 +60,15 @@
 class Autoupdate(object):
   """Class that contains functionality that handles Chrome OS update pings."""
 
-  def __init__(self, xbuddy, static_dir=None, proxy_port=None):
+  def __init__(self, xbuddy, static_dir=None):
     """Initializes the class.
 
     Args:
       xbuddy: The xbuddy path.
       static_dir: The path to the devserver static directory.
-      proxy_port: The port of local proxy to tell client to connect to you
-        through.
     """
     self.xbuddy = xbuddy
     self.static_dir = static_dir
-    self.proxy_port = proxy_port
 
   def GetUpdateForLabel(self, label):
     """Given a label, get an update from the directory.
@@ -113,15 +110,10 @@
   def GetStaticUrl(self):
     """Returns the static url base that should prefix all payload responses."""
     hostname = self.GetDevserverUrl()
+    _Log('Handling update ping as %s', hostname)
 
     static_urlbase = '%s/static' % hostname
-    # If we have a proxy port, adjust the URL we instruct the client to
-    # use to go through the proxy.
-    if self.proxy_port:
-      static_urlbase = _ChangeUrlPort(static_urlbase, self.proxy_port)
-
     _Log('Using static url base %s', static_urlbase)
-    _Log('Handling update ping as %s', hostname)
     return static_urlbase
 
   def GetPathToPayload(self, label, board):