Let the packager build the changelog

diff --git a/.pkgmeta b/.pkgmeta
index 03800ca..5b8237e 100644
--- a/.pkgmeta
+++ b/.pkgmeta
@@ -1,5 +1 @@
 package-as: Monomyth
-
-manual-changelog:
-    filename: CHANGELOG.txt
-    markup-type: bbcode