tests: Remove disabled code.

tests/tiny_psnr.c

@@ -52,21 +52,6 @@ uint64_t exp16_table[21]={
  582360139072LL,
 };
 
-#if 0
-// 16.16 fixpoint exp()
-static unsigned int exp16(unsigned int a){
-    int i;
-    int out= 1<<16;
-
-    for(i=19;i>=0;i--){
-        if(a&(1<<i))
-            out= (out*exp16_table[i] + (1<<15))>>16;
-    }
-
-    return out;
-}
-#endif
-
 // 16.16 fixpoint log()
 static int64_t log16(uint64_t a){
     int i;