Trim padding from commit message on small screens

Removes extra padding and whitespace from the commit message using the
media queries established for small screens.

Bug: Issue 9398
Change-Id: Ibd4f9c09f63ca79eda3bff5cba631c1e75e7babb
diff --git a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
index 5a56475..1b911e0 100644
--- a/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
+++ b/polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html
@@ -273,6 +273,12 @@
         #commitMessageEditor {
           min-width: 0;
         }
+        .commitMessage {
+          margin-right: 0;
+        }
+        .mainChangeInfo {
+          padding-right: 0;
+        }
       }
       /* NOTE: If you update this breakpoint, also update the
       BREAKPOINT_RELATED_SMALL in the JS */