Remove the wrong heapsort implementation

src/heapsort.c

@@ -1,41 +0,0 @@
-#include <string.h>
-#include "ucore/heapsort.h"
-
-static void
-uc_sift(unsigned char *base, size_t start, size_t count, size_t width,
-     uc_hs_cmp cmp)
-{
-    size_t root = start, child;
-
-    while ((root * 2 + 1) < count) {
-        child = root * 2 + 1;
-        if (child < (count - 1)
-            && cmp(&base[child * width], &base[(child + 1) * width]) < 0)
-            child++;
-
-        if (cmp(&base[root * width], &base[child * width]) < 0) {
-            memcpy(base + root * width, base + child * width, width);
-            root = child;
-        } else
-            return;
-    }
-}
-
-void
-uc_heapsort(void *base_, size_t count, size_t width,
-     uc_hs_cmp cmp)
-{
-    int start = count / 2 - 1, end = count - 1;
-    unsigned char *base = base_;
-
-    while (start >= 0) {
-        uc_sift(base, start, count, width, cmp);
-        start--;
-    }
-
-    while (end > 0) {
-        memcpy(base + end * width, base, width);
-        uc_sift(base, 0, end, width, cmp);
-        end--;
-    }
-}