Remove without_storage_info for the mandate pallet

[rajesh-nodle]

Part of #173

HighLights

• Not much changes, removed without_storage_info from pallet

[codecov]

Codecov Report

Merging #619 (5584bf6) into master (6e7d21d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #619   +/-   ##
=======================================
  Coverage   89.46%   89.46%           
=======================================
  Files          40       40           
  Lines        6370     6370           
=======================================
  Hits         5699     5699           
  Misses        671      671           

Impacted Files	Coverage Δ
pallets/mandate/src/lib.rs	0.00% <ø> (ø)

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