diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -351,7 +351,6 @@
     'DifferentialAddCommentView' => 'applications/differential/view/DifferentialAddCommentView.php',
     'DifferentialAdjustmentMapTestCase' => 'applications/differential/storage/__tests__/DifferentialAdjustmentMapTestCase.php',
     'DifferentialAffectedPath' => 'applications/differential/storage/DifferentialAffectedPath.php',
-    'DifferentialApplyPatchField' => 'applications/differential/customfield/DifferentialApplyPatchField.php',
     'DifferentialAsanaRepresentationField' => 'applications/differential/customfield/DifferentialAsanaRepresentationField.php',
     'DifferentialAuditorsCommitMessageField' => 'applications/differential/field/DifferentialAuditorsCommitMessageField.php',
     'DifferentialAuditorsField' => 'applications/differential/customfield/DifferentialAuditorsField.php',
@@ -4996,7 +4995,6 @@
     'DifferentialAddCommentView' => 'AphrontView',
     'DifferentialAdjustmentMapTestCase' => 'PhutilTestCase',
     'DifferentialAffectedPath' => 'DifferentialDAO',
-    'DifferentialApplyPatchField' => 'DifferentialCustomField',
     'DifferentialAsanaRepresentationField' => 'DifferentialCustomField',
     'DifferentialAuditorsCommitMessageField' => 'DifferentialCommitMessageCustomField',
     'DifferentialAuditorsField' => 'DifferentialStoredCustomField',
diff --git a/src/applications/differential/config/PhabricatorDifferentialConfigOptions.php b/src/applications/differential/config/PhabricatorDifferentialConfigOptions.php
--- a/src/applications/differential/config/PhabricatorDifferentialConfigOptions.php
+++ b/src/applications/differential/config/PhabricatorDifferentialConfigOptions.php
@@ -58,8 +58,6 @@
       new DifferentialUnitField(),
       new DifferentialRevertPlanField(),
 
-      new DifferentialApplyPatchField(),
-
       new DifferentialRevisionIDField(),
     );
 
diff --git a/src/applications/differential/customfield/DifferentialApplyPatchField.php b/src/applications/differential/customfield/DifferentialApplyPatchField.php
deleted file mode 100644
--- a/src/applications/differential/customfield/DifferentialApplyPatchField.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-final class DifferentialApplyPatchField
-  extends DifferentialCustomField {
-
-  public function getFieldKey() {
-    return 'differential:apply-patch';
-  }
-
-  public function getFieldName() {
-    return pht('Apply Patch');
-  }
-
-  public function getFieldDescription() {
-    return pht('Provides instructions for applying a local patch.');
-  }
-
-  public function shouldAppearInPropertyView() {
-    return true;
-  }
-
-  public function renderPropertyViewLabel() {
-    return $this->getFieldName();
-  }
-
-  public function renderPropertyViewValue(array $handles) {
-    $mono = $this->getObject()->getMonogram();
-
-    return phutil_tag('tt', array(), "arc patch {$mono}");
-  }
-
-}