dependecy_collector_spec: Disable two tests for Linuxbrew
dependecy_collector_spec: Disable two tests for Linuxbrew

XorgRequirement does not implement min_version, so these tests
are only meaningful or useful on macOS.

Perhaps it would make sense to implement that method in the
future, but since there will likely be substantial changes
to this upstream in the future there's no real reason to
do it now.

hanxue/linuxbrew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,maxim-belkin/brew,maxim-belkin/brew,hanxue/linuxbrew,Linuxbrew/brew,rwhogg/brew,rwhogg/brew,rwhogg/brew,Linuxbrew/brew,Linuxbrew/brew