remove unnecessary github PR templates

[pushkyn]

Fixes

Checklist

• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the [Contribution Guide] and my PR follows them.
• I updated my branch with the master branch.
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation about the functionality in the appropriate .md file
• I have added in line documentation to the code I modified

Short description of what this PR does:

• remove unnecessary github PR templates

If you have questions, please send an email to Sendgrid, or file a Github Issue in this repository.

[SendGridDX]

All committers have signed the CLA.

[codecov-io]

Codecov Report

Merging #505 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #505   +/-   ##
=====================================
  Coverage      83%    83%           
=====================================
  Files          30     30           
  Lines        1024   1024           
  Branches      160    160           
=====================================
  Hits          850    850           
  Misses         84     84           
  Partials       90     90

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[mbernier]

Good catch - lame that I didn't see that originally. Thank you!

[thinkingserious]

Hello @pushkyn,

Thanks again for the PR!

It's HACKTOBERFEST! We want to show our appreciation by sending you some special Hacktoberfest swag. If you have not already, could you please fill out this form so we can send it to you? Thanks!

Team SendGrid DX

[mbernier]

@pushkyn We are interested to chat with you since you did so many PRs during the month - could you please email me? my github user at sendgrid.com is my email