a bit cleaning

config.h

 #define NX (4020)
 #define NY (1680)
-#define NT  (1)
 #define NUM_THREADS (1)
 #define WIDTH_INIT  (1200)
 #define HEIGHT_INIT (900)
@@ -8,10 +7,7 @@
 #define WIDTH_TR1   (600)
 #define HEIGHT_TR1  (600)
 #define INCREASE_RADIUS (1.5)
-#define VMAX (1.0)
-#define VMIN (0.0)
-#define useminmax 0
 #define usesrgb 1
 #define oceancolor 0xffffffff
 #define landcolor  0x91919191
-#define stncolor  0x00bf0000
+#define stncolor   0x00bf0000

renderer.c

@@ -151,18 +151,6 @@ static int isinsymbol(int i, int j,float radius, int x, int y){
 }
 
 
-static void getminmax(float *min, float *max, struct dsp_field *dspf){
-  
-  if (useminmax){
-    *min = VMIN;
-    *max = VMAX;
-  }
-  else{
-    *min = minvall(dspf->SSH, dspf->nx *dspf->ny);
-    *max = maxvall(dspf->SSH, dspf->nx *dspf->ny);
-  }
-}
-
 static void drawonscreen_expose(struct Vis *vis,struct dsp_field *dspf,struct Colort *scolor, int ncolor, struct obs *obsp, struct screen_dim *scdim){
   
   float minv = 0.0f, maxv = 0.0f;