revert conda build to --no-test (#6486)
revert conda build to --no-test (#6486)

`--build-only` does not leave build artificat in `conda-bld/noarch` for whatever reason
Karel-van-de-Plassche/bokeh,dennisobrien/bokeh,stonebig/bokeh,ericmjl/bokeh,dennisobrien/bokeh,aavanian/bokeh,aavanian/bokeh,DuCorey/bokeh,DuCorey/bokeh,bokeh/bokeh,timsnyder/bokeh,jakirkham/bokeh,bokeh/bokeh,philippjfr/bokeh,DuCorey/bokeh,DuCorey/bokeh,ericmjl/bokeh,jakirkham/bokeh,jakirkham/bokeh,mindriot101/bokeh,timsnyder/bokeh,mindriot101/bokeh,Karel-van-de-Plassche/bokeh,mindriot101/bokeh,rs2/bokeh,aavanian/bokeh,rs2/bokeh,philippjfr/bokeh,ericmjl/bokeh,bokeh/bokeh,Karel-van-de-Plassche/bokeh,jakirkham/bokeh,timsnyder/bokeh,aavanian/bokeh,mindriot101/bokeh,philippjfr/bokeh,bokeh/bokeh,jakirkham/bokeh,rs2/bokeh,stonebig/bokeh,ericmjl/bokeh,ericmjl/bokeh,stonebig/bokeh,dennisobrien/bokeh,philippjfr/bokeh,aavanian/bokeh,philippjfr/bokeh,dennisobrien/bokeh,dennisobrien/bokeh,DuCorey/bokeh,stonebig/bokeh,rs2/bokeh,bokeh/bokeh,Karel-van-de-Plassche/bokeh,timsnyder/bokeh,Karel-van-de-Plassche/bokeh,timsnyder/bokeh,rs2/bokeh