Remove errant xlsx path.
Remove errant xlsx path.

haginara/csvkit,metasoarous/csvkit,gepuro/csvkit,wjr1985/csvkit,cypreess/csvkit,tlevine/csvkit,aequitas/csvkit,onyxfish/csvkit,themiurgo/csvkit,doganmeh/csvkit,jpalvarezf/csvkit,Jobava/csvkit,matterker/csvkit,unpingco/csvkit,archaeogeek/csvkit,bmispelon/csvkit,elcritch/csvkit,reubano/csvkit,bradparks/csvkit__query_join_filter_CSV_cli,arowla/csvkit,moradology/csvkit,nriyer/csvkit,snuggles08/csvkit,dannguyen/csvkit,KarrieK/csvkit,wireservice/csvkit,barentsen/csvkit,kyeoh/csvkit,Tabea-K/csvkit