Removed unused K parameters from macros that are not associative containers

examples/heapsort.c

@@ -6,7 +6,7 @@ static int intcmp(int a, int b)
     return a - b;
 }
 
-HEAP_GENERATE(h, heap, static, , int)
+HEAP_GENERATE(h, heap, static, int)
 
 int main(int argc, char const *argv[])
 {

examples/linked_list_node.c

@@ -2,7 +2,7 @@
 #include <assert.h>
 #include "../src/linkedlist.h"
 
-LINKEDLIST_GENERATE(l, list, , , int)
+LINKEDLIST_GENERATE(l, list, , int)
 
 int main(int argc, char const *argv[])
 {

examples/tree_print.c

@@ -3,7 +3,7 @@
 #include <time.h>
 #include "../src/treeset.h"
 
-TREESET_GENERATE(set, set, , , int)
+TREESET_GENERATE(set, set, , int)
 
 void print_tree(set_node *root, int height)
 {