Remove get_review_url method

It was used in single place where the unit object is available as
well, so it's better to get the URL directly from it.
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/html/mail/new_suggestion.html

@@ -52,7 +52,7 @@
 </p>
 
 <p>
-<a href="{{ current_site_url }}{{ suggestion.get_review_url }}">{{ current_site_url }}{{ suggestion.get_review_url }}</a>
+<a href="{{ current_site_url }}{{ unit.get_absolute_url }}">{{ current_site_url }}{{ unit.get_absolute_url }}</a>
 </p>
 
 {% include "mail/footer.html" %}

weblate/html/mail/new_suggestion.txt

@@ -12,6 +12,6 @@
 
 {% trans "You can review it at:" %}
 
-{{ current_site_url }}{{ suggestion.get_review_url }}
+{{ current_site_url }}{{ unit.get_absolute_url }}
 
 {% endfilter%}{% endautoescape %}{% include "mail/footer.txt" %}

weblate/trans/models/unitdata.py

@@ -149,12 +149,6 @@ class Suggestion(models.Model, RelatedUnitMixin):
         '''
         return self.get_matching_unit().source
 
-    def get_review_url(self):
-        '''
-        Returns URL which can be used for review.
-        '''
-        return self.get_matching_unit().get_absolute_url()
-
     def get_user_display(self):
         return get_user_display(self.user, link=True)