This function silences (verbose) output prints. Thanks to Hadley Wickham for bringing the idea.
quiet(fx, quiet = TRUE)Same as fx but with no messages or prints.
Function to quiet
Quiet outputs? If not, skip quietness.
Other Tools: 
autoline(),
bind_files(),
bring_api(),
db_download(),
db_upload(),
export_plot(),
export_results(),
files_functions(),
font_exists(),
formatColoured(),
formatHTML(),
get_credentials(),
glued(),
grepm(),
h2o_selectmodel(),
haveInternet(),
image_metadata(),
importxlsx(),
ip_data(),
json2vector(),
list_cats(),
listfiles(),
mail_send(),
markdown2df(),
move_files(),
msplit(),
myip(),
read.file(),
statusbar(),
tic(),
try_require(),
updateLares(),
warnifnot(),
what_size()