res/res_hep_rtcp: Remove dependency on PJSIP

The res_hep_rtcp module was incorrectly including <pjsip.h>. This didn't need
to be included, as the module does not using PJPROJECT any fashion.
Unfortunately, because res_hep_rtcp did not include pjsip in its MODULEINFO as
a dependency, this also meant that res_hep_rtcp will fail to compile on a
system without PJPROJECT.

This patch removes the include.

Thanks to Damien Wedhorn for pointing this out in #asterisk-dev.

ASTERISK-24236 #close
Reported by: Damien Wedhorn, Matt Jordan
Tested by: Damien Wedhorn
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Merged revisions 421064 from http://svn.asterisk.org/svn/asterisk/branches/12
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Merged revisions 421065 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@421066 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_hep_rtcp.c

@@ -33,8 +33,6 @@
 
 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 
-#include <pjsip.h>
-
 #include "asterisk/res_hep.h"
 #include "asterisk/module.h"
 #include "asterisk/netsock2.h"