Mkvtoolnix package: remove hardcoded values used for testing
Mkvtoolnix package: remove hardcoded values used for testing

octomike/chocolatey-coreteampackages,AdmiringWorm/chocolatey-coreteampackages,ebugusey/chocolatey-coreteampackages,lennartb-/chocolatey-coreteampackages,ebugusey/chocolatey-coreteampackages,lennartb-/chocolatey-coreteampackages,AdmiringWorm/chocolatey-coreteampackages,octomike/chocolatey-coreteampackages