SPTCH-3413: fix odd total timer reset in file_do()

The total timer is properly reset in MSTATE_INIT.
MSTATE_CONNECT starts with resetting the timer that is a start point for
further multi states.
If file://, MSTATE_DO calls file_do() that should not reset the total timer.
Otherwise, the total time is always less than the pre-transfer and the start
transfer times.

lib/file.c

@@ -420,8 +420,6 @@ static CURLcode file_do(struct Curl_easy *data, bool *done)
 
   *done = TRUE; /* unconditionally */
 
-  Curl_pgrsStartNow(data);
-
   if(data->state.upload)
     return file_upload(data);