Revert submission 693
Reason for revert: Moving away from CPI abstraction
Reverted Changes:
I8c252e137:bridge, token_bridge: Use Many<T>
I6a721e8a8:Solitaire: Add an explicit Many<T> type for nested...
Ibdc94b4c6:Solitaire: Serialize CPI accounts as an AccountMet...
Iefa59f5d4:Solitaire: Extend Peel to support CPI re-wrapping
Change-Id: I94dc6f66b631f25fecf2c3b3a8b72302a706f0a2