Remove outdated/removed Win32 URLs in C comments

Reported-by: Ashutosh Sharma

Author: bmomjian

src/include/port/win32.h

@@ -43,9 +43,6 @@
 
 /*
  * defines for dynamic linking on Win32 platform
- *	http://support.microsoft.com/kb/132044
- *	http://msdn.microsoft.com/en-us/library/8fskxacy(v=vs.80).aspx
- *	http://msdn.microsoft.com/en-us/library/a90k134d(v=vs.80).aspx
  */
 
 #ifdef BUILDING_DLL