removed an old script

package/osx/installer/build.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-set -euxo pipefail
-
-rm -rf package/osx/KeeWeb\ Installer.app
-
-osacompile \
-    -l JavaScript \
-    -o package/osx/KeeWeb\ Installer.app \
-    package/osx/installer/main.js
-
-cp graphics/icon.icns package/osx/KeeWeb\ Installer.app/Contents/Resources/applet.icns
-codesign --remove-signature package/osx/KeeWeb\ Installer.app
-
-CS_ID=$(cat keys/codesign.json | jq -j '.identities.app')
-codesign -s "$CS_ID" package/osx/KeeWeb\ Installer.app