fix: remove unnecessary functions

libs/utilities.c

@@ -9,14 +9,4 @@ int getStrLength(char* str) {
     };
 
     return length;
-}
-
-void sayhi() { printf("hello guys"); }
-
-
-
-
-
-void sayGuido()
-{ printf("hello maquinas"); }
-
+}

libs/utilities.h

@@ -17,7 +17,4 @@
  */
 int getStrLength(char* str);
 
-void sayhi();
-void sayGuido();
-
 #endif  // UTILITIES_H_INCLUDED