mesa|mapi: replace _mesa_[v]snprintf with [v]snprintf

MSVC 2015 and newer has perfectly valid snprintf and vsnprintf
implementations, let's just use those.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3024>

src/util/imports.c

@@ -1,7 +1,7 @@
 /**
  * \file imports.c
  * Standard C library function wrappers.
- * 
+ *
  * Imports are services which the device driver or window system or
  * operating system provides to the core renderer.  The core renderer (Mesa)
  * will call these functions in order to do memory allocation, simple I/O,
@@ -60,25 +60,3 @@
 #elif defined(__IBMC__) || defined(__IBMCPP__)
 extern int vsnprintf(char *str, size_t count, const char *fmt, va_list arg);
 #endif
-
-
-/** Needed due to #ifdef's, above. */
-int
-_mesa_vsnprintf(char *str, size_t size, const char *fmt, va_list args)
-{
-   return vsnprintf( str, size, fmt, args);
-}
-
-/** Wrapper around vsnprintf() */
-int
-_mesa_snprintf( char *str, size_t size, const char *fmt, ... )
-{
-   int r;
-   va_list args;
-   va_start( args, fmt );  
-   r = vsnprintf( str, size, fmt, args );
-   va_end( args );
-   return r;
-}
-
-

src/util/imports.h

@@ -47,15 +47,6 @@
 extern "C" {
 #endif
 
-/*
- * For GL_ARB_vertex_buffer_object we need to treat vertex array pointers
- * as offsets into buffer stores.  Since the vertex array pointer and
- * buffer store pointer are both pointers and we need to add them, we use
- * this macro.
- * Both pointers/offsets are expressed in bytes.
- */
-#define ADD_POINTERS(A, B)  ( (uint8_t *) (A) + (uintptr_t) (B) )
-
 
 /**
  * Sometimes we treat floats as ints.  On x86 systems, moving a float
@@ -68,21 +59,6 @@ extern "C" {
 typedef union { float f; int i; unsigned u; } fi_type;
 
 
-
-/*@}*/
-
-
-/**********************************************************************
- * Functions
- */
-
-extern int
-_mesa_snprintf( char *str, size_t size, const char *fmt, ... ) PRINTFLIKE(3, 4);
-
-extern int
-_mesa_vsnprintf(char *str, size_t size, const char *fmt, va_list arg);
-
-
 #ifdef __cplusplus
 }
 #endif