Remove unnecessary empty checks from willFilterPage()

Summary: Fixes T3600. These checks are obsolete after D6512.

Test Plan: Syntax / static / inspection.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3600

Differential Revision: https://secure.phabricator.com/D6563

src/applications/paste/query/PhabricatorPasteQuery.php

@@ -85,10 +85,6 @@ final class PhabricatorPasteQuery
   }
 
   protected function willFilterPage(array $pastes) {
-    if (!$pastes) {
-      return $pastes;
-    }
-
     if ($this->needRawContent) {
       $pastes = $this->loadRawContent($pastes);
     }