STYLE: consistent use of '= delete' for removed constructors/assignments

- make the purpose more explicit, and reduces some work for the
  compiler as well.

src/functionObjects/graphics/runTimePostProcessing/functionObjectLine.H

@@ -60,10 +60,10 @@ private:
 
     // Private Member Functions
 
-        //- Disallow default bitwise copy construct
+        //- No copy construct
         functionObjectLine(const functionObjectLine&) = delete;
 
-        //- Disallow default bitwise assignment
+        //- No copy assignment
         void operator=(const functionObjectLine&) = delete;