Fix connection path validation and remove unused PathValidator function

[colin-axner]

Description

Not a big issue since from what I can tell we only store this to make queries easier

closes: #7927

---

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• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #7930 (d83b4c6) into master (6b62d26) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7930      +/-   ##
==========================================
- Coverage   54.17%   54.17%   -0.01%     
==========================================
  Files         612      612              
  Lines       38997    38994       -3     
==========================================
- Hits        21128    21125       -3     
  Misses      15697    15697              
  Partials     2172     2172              

[fedekunze]

LGTM. thanks

[cwgoes]

utACK