Remove obsolete patch

3rdp/build/random_exit.patch

---- random/unix.c.orig	2012-07-14 00:50:55.000000000 -0700
-+++ random/unix.c	2012-07-14 00:52:28.000000000 -0700
-@@ -161,7 +161,7 @@
-    process, which calls exit() rather than returning */
- 
- #define ENSURES_EXIT( x ) \
--		if( !( x ) ) { assert( INTERNAL_ERROR ); exit( -1 ); }
-+		if( !( x ) ) { assert( INTERNAL_ERROR ); _Exit( -1 ); }
- 
- /* The structure containing information on random-data sources.  Each record 
-    contains the source and a relative estimate of its usefulness (weighting) 
-@@ -544,7 +544,7 @@
- 		/* We are the child, connect the read side of the pipe to stdout and
- 		   unplug stdin and stderr */
- 		if( dup2( pipedes[ STDOUT_FILENO ], STDOUT_FILENO ) < 0 )
--			exit( 127 );
-+			_Exit( 127 );
- 		if( ( fd = open( "/dev/null", O_RDWR ) ) > 0 )
- 			{
- 			dup2( fd, STDIN_FILENO );
-@@ -616,7 +616,7 @@
- #ifdef HAS_VFORK
- 		_exit( 127 );
- #else
--		exit( 127 );
-+		_Exit( 127 );
- #endif /* Unixen that have vfork() */
- 		}
- 
-@@ -1539,7 +1539,7 @@
- 
- 	/* "Thou child of the daemon, ... wilt thou not cease...?"
- 	   -- Acts 13:10 */
--	exit( 0 );
-+	_Exit( 0 );
- 	}
- 
- /* Unix slow poll.  If a few of the randomness sources create a large amount