Bug 40990: Remove old macos signing scripts

tools/signing/do-all-signing

tools/signing/finished-signing-clean-macos-signer

tools/signing/gatekeeper-bundling.sh

tools/signing/macos-signer-gatekeeper-signing

tools/signing/macos-signer-gatekeeper-signing.mullvadbrowser

tools/signing/macos-signer-gatekeeper-signing.torbrowser

tools/signing/macos-signer-notarization

tools/signing/macos-signer-notarization.mullvadbrowser

tools/signing/macos-signer-notarization.torbrowser

tools/signing/macos-signer-proxy

tools/signing/macos-signer-proxy.mullvadbrowser

tools/signing/macos-signer-proxy.torbrowser

tools/signing/macos-signer-stapler

tools/signing/macos-signer-stapler.mullvadbrowser

tools/signing/macos-signer-stapler.torbrowser

tools/signing/set-config

tools/signing/set-config.hosts

tools/signing/set-config.macos-notarization

tools/signing/sync-macos-local-to-macos-signer

...s/signing/sync-macos-local-to-macos-signer.mullvadbrowser