Remove non-UI resource

Defined within EF refactoring since it should not be translated.

Author: BZngr

Rubberduck.Resources/RubberduckUI.Designer.cs

@@ -1759,10 +1759,6 @@ Import aborted.</value>
     <value>Unable to encapsulate '{0}'. ReDim({0}) statement(s) exist in other modules.</value>
     <comment>{0} = selected field IdentifierName</comment>
   </data>
-  <data name="EncapsulateField_DefaultObjectStateUDTFieldName" xml:space="preserve">
-    <value>this</value>
-    <comment>VBA identifier; should not be translated</comment>
-  </data>
   <data name="EncapsulateField_NameConflictDetected" xml:space="preserve">
     <value>Name conflict</value>
   </data>