Revert "Enable Shell Transitions"

Revert "Enable Shell Transitions"

Revert submission 19199517-enable_shell_transit

Reason for revert: DroidMonitor-triggered revert due to breakage, bug b/253049434 b/253109117 b/253181889 b/253271977
Reverted Changes:
I85f9565b3:Enable Shell Transitions
I75d0fe964:Enable Shell Transitions
I0565e423a:Enable Shell Transitions
I98bf8f0aa:Enable Shell Transitions

Change-Id: Ib259a6f232c04c9c30079297370e1ecb31aea74b