message: Remove unbalanced padding in create key backup dialog
  This padding only one side made it impossible to center things in the dialog.
  Since the dialog also has nice spacing without the padding, this change removes
  it.
  Fixes
diff: @@ -14,10 +14,6 @@ See the License for the specific language governing permissions and
  limitations under the License.
  */
  -.mx_CreateKeyBackupDialog {
  - padding-right: 40px;
  -}
  -
  .mx_CreateKeyBackupDialog .mx_Dialog_title {
  /* TODO: Consider setting this for all dialog titles. */
  margin-bottom: 1em;
  