warzone2100: don't install /usr/bin/.portable

it tricks keepassxc into portable mode

Closes: #36277

srcpkgs/warzone2100/template

@@ -1,7 +1,7 @@
 # Template file for 'warzone2100'
 pkgname=warzone2100
 version=4.2.7
-revision=1
+revision=3
 wrksrc="warzone2100"
 build_style=cmake
 configure_args="-DWZ_ENABLE_WARNINGS_AS_ERRORS=OFF -DWZ_DISTRIBUTOR=void"
@@ -28,6 +28,12 @@ post_extract() {
 	fi
 }
 
+post_install() {
+	# .portable has side-effect with keepassxc
+	# https://github.com/Warzone2100/warzone2100/issues/2645
+	rm "$DESTDIR"/usr/bin/.portable
+}
+
 warzone2100-data_package() {
 	short_desc+=" - data files"
 	pkg_install() {