remove useless url in changes overview

Dependencies

• [2] X5OIC5FF * hydra: ui bug
• [3] 2B63JW6F * hydra: changes in list in stead of table, also showing changes of changed 'build output' inputs
• [*] IK53RV4V

Change contents

• replacement in src/root/common.tt at line 294
  [2.313]→[2.313:449](∅→∅)
  − <b>[% bi1.name %]</b></td><td>[% bi1.uri %] revision changed from [% bi1.revision %] to [% bi2.revision %].
  [2.313]

  [2.449]
  + <b>[% bi1.name %]</b></td><td>Revision changed from [% bi1.revision %] to [% bi2.revision %].