Delete 'du1'

du1

@@ -1,31 +0,0 @@
-#include <assert.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <assert.h>
-#include <string.h>
-
-int main (){
-  int c;
-  int counter;
-  counter=0;
-  c=getchar();
-  while (1==1){
-      if (c=='\n')
-        counter=counter+1;
-      if (c==EOF){
-        return -1;
-      }
-    if ('a' <= c && c <= 'z') {
-        putchar(toupper (c));
-        printf("\nPočet riadkov: %d\n",counter);
-        break;
-  } else{
-        putchar(tolower (c));
-        printf("\nPočet riadkov: %d\n",counter);
-        break;
-    }
-    
-    putchar (c);
-  assert (! ferror (stdin));
-  return 0;
-  }