Revert "Generated code> make it harder to mark code as generated"

Summary: This reverts commit e15da75687.
Test Plan: None
Reviewed By: epriestley
Reviewers: epriestley
CC: aran, epriestley
Differential Revision: 762

src/applications/differential/parser/changeset/DifferentialChangesetParser.php

@@ -540,30 +540,7 @@ class DifferentialChangesetParser {
       ipull($this->intra, 1),
       $new_corpus);
 
-
+    $generated = (strpos($new_corpus_block, '@'.'generated') !== false);
-    /**
-     * Generated code should be marked with ' @generated', '{@generated', or
-     * the block must begin with '@generated'.
-     *
-     * Any other instances of '@generated' will be ignored.
-     */
-    $generated = false;
-    $pos = strpos($new_corpus_block, '@generated');
-    if ($pos === 0) {
-      $generated = true;
-    } else {
-      $prefix_char = substr($new_corpus_block, $pos - 1, 1);
-      switch ($prefix_char) {
-        case ' ':
-        case '{':
-          $generated = true;
-          break;
-
-        default:
-          $generated = false;
-          break;
-      }
-    }
 
     $this->specialAttributes[self::ATTR_GENERATED] = $generated;
   }