refactor: Remove support for V1 Events

[lenny-goodell]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

SDK has temporary support for V1 Events which get converted to V2 Events

Issue Number: #884

What is the new behavior?

Support for V1 Events has been removed

Does this PR introduce a breaking change?

• Yes
• No

Are there any new imports or modules? If so, what are they used for and why?

no

Are there any specific instructions or things that should be known prior to reviewing?

Other information

[codecov-commenter]

Codecov Report

Merging #889 (4bf66b1) into master (69a9f95) will decrease coverage by 0.31%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #889      +/-   ##
==========================================
- Coverage   64.14%   63.82%   -0.32%     
==========================================
  Files          32       32              
  Lines        2139     2101      -38     
==========================================
- Hits         1372     1341      -31     
+ Misses        674      671       -3     
+ Partials       93       89       -4     

Impacted Files	Coverage Δ
internal/runtime/runtime.go	72.30% <ø> (-2.10%)	⬇️

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