Remove header files that only have includes.

fpdfsdk/src/pdfwindow/PWL_Label.cpp

Index: fpdfsdk/src/pdfwindow/PWL_Label.cpp
diff --git a/fpdfsdk/src/pdfwindow/PWL_Label.cpp b/fpdfsdk/src/pdfwindow/PWL_Label.cpp
index 8ff7235701ebb05bacf18874630b229d9f125ff4..4f8a0dd8ed0118417a8f0a0d1cb2b8e4cfb97f40 100644
--- a/fpdfsdk/src/pdfwindow/PWL_Label.cpp
+++ b/fpdfsdk/src/pdfwindow/PWL_Label.cpp
@@ -4,13 +4,10 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "fpdfsdk/include/pdfwindow/PDFWindow.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Label.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Utils.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Wnd.h"
 
-/* ---------------------------- CPWL_Label ------------------------------ */
-
 CPWL_Label::CPWL_Label() : m_pEdit(NULL) {
   m_pEdit = IFX_Edit::NewEdit();
   ASSERT(m_pEdit);