System/core: Remove include/ziparchive

Remove the now unnecessary link.

Partially reverts commit cdf7ff8e204beb6bbfe263c3d6255c2b2d0095a7.

Bug: 37342627
Test: m
Change-Id: Ia44df234923c798618d7dc79d8f9f9432fbfada9
diff --git a/include/ziparchive b/include/ziparchive
deleted file mode 120000
index d8fa424..0000000
--- a/include/ziparchive
+++ /dev/null
@@ -1 +0,0 @@
-../libziparchive/include/ziparchive
\ No newline at end of file