Remove temporary method needed for WFLOW handler configuration

[sisyphusSmiling]

Related: #134

Description

Follow up to #137 removing temporary methods relating to removing type associations which was necessary to reconfigure FlowEVMBridgeConfig for FlowToken <-> WFLOW bridging

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For contributor use:

• Targeted PR against main branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the standards mentioned here.
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.35%. Comparing base (02aab3f) to head (ed8b258).
Report is 215 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #141      +/-   ##
==========================================
+ Coverage   86.19%   87.35%   +1.15%     
==========================================
  Files          18       18              
  Lines         884     1020     +136     
==========================================
+ Hits          762      891     +129     
- Misses        122      129       +7     

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