ref: remove servercount from texture struct, Xash don't use it (and it's also harmful anyway)

ref/gl/gl_local.h

@@ -130,7 +130,6 @@ typedef struct gltexture_s
 	float		xscale;
 	float		yscale;
 
-	int		servercount;
 	uint		hashValue;
 	struct gltexture_s	*nextHash;
 } gl_texture_t;

ref/soft/r_local.h

@@ -363,8 +363,6 @@ typedef struct image_s
 	pixel_t        *pixels[4];                              // mip levels
 	pixel_t        *alpha_pixels;                           // mip levels
 
-
-	int            servercount;
 	uint           hashValue;
 	struct image_s *nextHash;
 } image_t;