zerver/views: Remove u prefix from strings.

zerver/views/auth.py

@@ -371,7 +371,7 @@ def finish_google_oauth2(request: HttpRequest) -> HttpResponse:
         full_name = body['name']['formatted']
     except KeyError:
         # Only google+ users have a formatted name. I am ignoring i18n here.
-        full_name = u'{} {}'.format(
+        full_name = '{} {}'.format(
             body['name']['givenName'], body['name']['familyName']
         )
     for email in body['emails']:

zerver/views/messages.py

@@ -179,8 +179,8 @@ class NarrowBuilder:
         Escape user input to place in a regex
 
         Python's re.escape escapes unicode characters in a way which postgres
-        fails on, u'\u03bb' to u'\\\u03bb'. This function will correctly escape
-        them for postgres, u'\u03bb' to u'\\u03bb'.
+        fails on, '\u03bb' to '\\\u03bb'. This function will correctly escape
+        them for postgres, '\u03bb' to '\\u03bb'.
         """
         s = list(pattern)
         for i, c in enumerate(s):
@@ -398,8 +398,8 @@ class NarrowBuilder:
 # whereas the offsets from tsearch_extras are in bytes, so we
 # have to account for both cases in the logic below.
 def highlight_string(text: Text, locs: Iterable[Tuple[int, int]]) -> Text:
-    highlight_start = u'<span class="highlight">'
-    highlight_stop = u'</span>'
+    highlight_start = '<span class="highlight">'
+    highlight_stop = '</span>'
     pos = 0
     result = ''
     in_tag = False

zerver/views/registration.py

@@ -184,7 +184,7 @@ def accounts_register(request: HttpRequest) -> HttpResponse:
         default_stream_group_names = request.POST.getlist('default_stream_group')
         default_stream_groups = lookup_default_stream_groups(default_stream_group_names, realm)
 
-        timezone = u""
+        timezone = ""
         if 'timezone' in request.POST and request.POST['timezone'] in get_all_timezones():
             timezone = request.POST['timezone']