Move av_gettime() back to lavf/utils.c

Originally committed as revision 9706 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/os_support.c

@@ -25,8 +25,6 @@
 #include <unistd.h>
 #include <fcntl.h>
 #endif
-#include <sys/time.h>
-#include <time.h>
 
 #ifndef HAVE_SYS_POLL_H
 #if defined(__MINGW32__)
@@ -36,16 +34,6 @@
 #endif
 #endif
 
-/**
- * gets the current time in micro seconds.
- */
-int64_t av_gettime(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
 #ifdef CONFIG_NETWORK
 #include "network.h"