Delete v043_temp directory

[ValarDragon]

What is the purpose of the change

This directory should have been deleted when we first moved to SDK v0.44.x, it was a pre-release copy of several future SDK utility modules.

Brief Changelog

• Delete the v043_temp directory

Testing and Verifying

This change is a trivial rework / code cleanup without any test coverage.

Compare the deleted module function to whats in the SDK: https://github.com/cosmos/cosmos-sdk/blob/main/types/address/hash.go#L63-L66

and https://github.com/cosmos/cosmos-sdk/blob/main/types/address/store_key.go#L8

(only API's from the module that we previously used)

Documentation and Release Note

• Does this pull request introduce a new feature or user-facing behavior changes? yes
• Is a relevant changelog entry added to the Unreleased section in CHANGELOG.md? yes
• How is the feature or change documented? not applicable

[codecov-commenter]

Codecov Report

Merging #1630 (e79c865) into main (5492284) will decrease coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1630      +/-   ##
==========================================
- Coverage   19.59%   19.50%   -0.09%     
==========================================
  Files         242      239       -3     
  Lines       32273    32225      -48     
==========================================
- Hits         6323     6287      -36     
+ Misses      24792    24784       -8     
+ Partials     1158     1154       -4     

Impacted Files	Coverage Δ
x/gamm/types/pool.go	0.00% <ø> (ø)

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