Revert "Print avaialble transports when BackupPreparer fails"

This is a revert of ag/9205305

This reverts commit a482e1c25a7667f5b27fcfba1d2c52e3e436ac7a.

Reason for revert: b/139717739. There's a bug in this CL where it asserts that backup is enabled after setting it enabled to false!

Bug: 139717739

Change-Id: I4537fed8fda2cb60e76ecc9c9986b6e41d1d3d9f
1 file changed