Revert "Show error message when we fail to get targets for --all."

This reverts commit 9a6a03c5ae0e0fe409c9ef9cda3ee5889bc959a5.
Revert "Added --all option to the "install" command."

This reverts commit 1cc5c9586ec9224366179944a1db3c799a73d75a.

Conflicts:
	Changes