patch 9.1.1720: using gettimeofday() for parsing OSC responses

Problem:  Using gettimeofday() for parsing OSC responses
Solution: Use ELAPSED_ macros instead (Foxe Chen).

closes: #18165

Signed-off-by: Foxe Chen <chen.foxe@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/structs.h

@@ -1290,19 +1290,6 @@ typedef struct
 #endif
 } tasave_T;
 
-// Holds state for current OSC response.
-typedef struct
-{
-    int		    processing;	// If we are in the middle of an OSC response
-    char_u	    start_char;	// First char in the OSC response
-    garray_T	    buf;	// Buffer holding the OSC response, to be
-				// placed in the "v:termosc" vim var.
-
-    struct timeval  start;	// Set at the beginning of an OSC response.
-				// Used to timeout after a set amount of
-				// time.
-} oscstate_T;
-
 /*
  * Used for conversion of terminal I/O and script files.
  */