Closes #235 removing renv related files #768

Job	Run time
Get R version	1s
Check / (release)	5m 9s
Check / (devel)	52s
Check / (oldrel)	5m 5s
Links / Validate Links	14s
Documentation	0s
Validation	0s
Render README	0s
Spelling / Spellcheck	5m 48s
Lint / Lint	6m 12s
Code Style / Code Style	5m 33s
Code Coverage / Test Coverage	6m 38s
Check Templates / Verify	6m 30s
Man Pages / Roxygen	6m 25s
Code Coverage / Generate badge for coverage	3s
	48m 30s

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