getSecureHostname function is removed.

It was used in the past, when AppEngine did not support https URLs for non appspot.com domains. Right now it is not an issue and there is no need to maintain two domains.

The dicussion thread is here:
https://groups.google.com/forum/#!topic/melange-soc-dev/5DKYc7ddA94

It is also related to issue 1961.
diff --git a/app/melange/appengine/system.py b/app/melange/appengine/system.py
index 11845c8..b84b36f 100644
--- a/app/melange/appengine/system.py
+++ b/app/melange/appengine/system.py
@@ -47,11 +47,6 @@
   return os.environ.get('HTTP_HOST', '')
 
 
-def getSecureHostname():
-  """Returns the hostname suitable for https requests."""
-  return "%s.appspot.com" % getApplicationId()
-
-
 def getAppVersion():
   """Returns the Google App Engine "version" of the running instance."""
   return os.environ.get('CURRENT_VERSION_ID')
diff --git a/app/melange/request/links.py b/app/melange/request/links.py
index 7696537..6204510 100644
--- a/app/melange/request/links.py
+++ b/app/melange/request/links.py
@@ -18,7 +18,6 @@
 
 from django.core import urlresolvers
 
-from melange.appengine import system
 from melange.models import organization as org_model
 
 from soc.logic import program as program_logic
@@ -38,11 +37,7 @@
     A full path to the resource.
   """
   # TODO(nathaniel): consider using scheme-relative urls here?
-  if secure:
-    protocol = 'https'
-    hostname = system.getSecureHostname()
-  else:
-    protocol = 'http'
+  protocol = 'https' if secure else 'http'
 
   return '%s://%s%s' % (protocol, hostname, relative_url)
 
diff --git a/app/soc/views/helper/request_data.py b/app/soc/views/helper/request_data.py
index 0c88340..fc06043 100644
--- a/app/soc/views/helper/request_data.py
+++ b/app/soc/views/helper/request_data.py
@@ -814,12 +814,8 @@
       return url
 
     # TODO(nathaniel): consider using scheme-relative urls here?
-    if secure:
-      protocol = 'https'
-      hostname = system.getSecureHostname()
-    else:
-      protocol = 'http'
-      hostname = site_logic.getHostname(self._data)
+    protocol = 'https' if secure else 'http'
+    hostname = site_logic.getHostname(self._data)
 
     return '%s://%s%s' % (protocol, hostname, url)
 
diff --git a/tests/app/melange/appengine/test_system.py b/tests/app/melange/appengine/test_system.py
index ddc4c29..c03a404 100644
--- a/tests/app/melange/appengine/test_system.py
+++ b/tests/app/melange/appengine/test_system.py
@@ -109,18 +109,6 @@
       else:
         os.environ['HTTP_HOST'] = self.default_host
 
-  def testGetSecureHostName(self):
-    """Tests that a hostname suitable for https requests is returned."""
-    try:
-      os.environ['APPLICATION_ID'] = 'test-app-run'
-      expected_host = 'test-app-run.appspot.com'
-      self.assertEqual(system.getSecureHostname(), expected_host)
-    finally:
-      if self.default_application_id is None:
-        del os.environ['APPLICATION_ID']
-      else:
-        os.environ['APPLICATION_ID'] = self.default_application_id
-
   def testGetAppVersion(self):
     """Tests if a google-app-version is returned."""
     try: