removed unneccessary doc files

docs/acmart.bib

docs/acmart.cls

docs/acmart.dtx

docs/acmart.ins

docs/acmart.pdf

docs/comment.cut

docs/documentation.aux

docs/documentation.log

docs/documentation.out

docs/documentation.pdf

docs/documentation.tex

docs/necessary/acmart.cls

docs/necessary/comment.cut

docs/references.bib

docs/sample-franklin.png

docs/sample-sigplan.aux

docs/sample-sigplan.log

docs/sample-sigplan.out

docs/sample-sigplan.pdf

docs/sample-sigplan.tex