remove alias.go from 03-connection

[colin-axner]

Description

ref: #6311

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• 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

[codecov]

Codecov Report

Merging #6543 into master will not change coverage.
The diff coverage is 83.67%.

@@           Coverage Diff           @@
##           master    #6543   +/-   ##
=======================================
  Coverage   56.85%   56.85%           
=======================================
  Files         479      479           
  Lines       28796    28796           
=======================================
  Hits        16371    16371           
  Misses      11268    11268           
  Partials     1157     1157