net-im/dissent: fix style

Signed-off-by: dsaf <ghostyn678+git@gmail.com>

net-im/dissent/dissent-0.0.37.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2025 Gentoo Authors
+# Copyright 2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -73,14 +73,4 @@ src_install() {
 
 	insinto /usr/share/metainfo
 	doins so.libdb.dissent.metainfo.xml
-
-	einstalldocs
-}
-
-pkg_postinst() {
-	xdg_pkg_postinst
-}
-
-pkg_postrm() {
-	xdg_pkg_postrm
 }