delete some dead code (yay!)

TODO

@@ -22,7 +22,7 @@ Should probably do before it hits users
 ------------------------------------------------------------
 Things that I want to do, but would put me past my deadline:
 
-* coverage: 115, 155, 193, 257, 274, 285-288, 426, 430
+* coverage: 105, 124, 135, 184, 242, 281, 285-292, 297-298, 326-328, 461, 465
 
 * populate wheels into the cache during build
     see also: https://github.com/pypa/pip/pull/1572

venv_update.py

@@ -110,17 +110,6 @@ def req_is_absolute(requirement):
     return False
 
 
-@contextmanager
-def patch(obj, attr, val):
-    """Temporarily set an attribute to a particular value"""
-    orig = getattr(obj, attr)
-    setattr(obj, attr, val)
-    try:
-        yield
-    finally:
-        setattr(obj, attr, orig)
-
-
 def faster_find_requirement(self, req, upgrade):
     """see faster_pip_packagefinder"""
     from pip.index import BestVersionAlreadyInstalled
@@ -153,19 +142,9 @@ def faster_find_requirement(self, req, upgrade):
                     return link
 
     # otherwise, do the full network search
-    self.network_allowed = True
     return self.unpatched['find_requirement'](self, req, upgrade)
 
 
-def faster__get_page(self, link, req):
-    """see faster_pip_packagefinder"""
-    from pip.index import HTMLPage
-    if self.network_allowed or link.url.startswith('file:'):
-        return self.unpatched['_get_page'](self, link, req)
-    else:
-        return HTMLPage('', 'fake://' + link.url)
-
-
 @contextmanager
 def faster_pip_packagefinder():
     """Provide a short-circuited search when the requirement is pinned and appears on disk.
@@ -178,11 +157,9 @@ def faster_pip_packagefinder():
 
     PackageFinder.unpatched = vars(PackageFinder).copy()
     PackageFinder.find_requirement = faster_find_requirement
-    PackageFinder._get_page = faster__get_page
     try:
         yield
     finally:
-        PackageFinder._get_page = PackageFinder.unpatched['_get_page']
         PackageFinder.find_requirement = PackageFinder.unpatched['find_requirement']
         del PackageFinder.unpatched