small fix & get rid of unnecessary comments in the code
small fix & get rid of unnecessary comments in the code

apigee/edx-cs_comments_service,nttks/cs_comments_service,Stanford-Online/cs_comments_service,nttks/cs_comments_service,edx/cs_comments_service,apigee/edx-cs_comments_service,Stanford-Online/cs_comments_service,rue89-tech/cs_comments_service,rue89-tech/cs_comments_service,edx/cs_comments_service,edx-solutions/cs_comments_service,miptliot/cs_comments_service,apardo/cs_comments_service,Unow/cs_comments_service,EDUlib/cs_comments_service,edx-solutions/cs_comments_service,nttks/cs_comments_service,gsehub/cs_comments_service,Unow/cs_comments_service,edx/cs_comments_service,miptliot/cs_comments_service,gsehub/cs_comments_service,EDUlib/cs_comments_service,Unow/cs_comments_service,rue89-tech/cs_comments_service,apardo/cs_comments_service,gsehub/cs_comments_service,EDUlib/cs_comments_service,miptliot/cs_comments_service,apardo/cs_comments_service,edx-solutions/cs_comments_service,Stanford-Online/cs_comments_service