weed out
• remove an inferior or unwanted component of a group or collection.
• "we must raise the level of research and weed out the poorest work"
Similar:
isolate,
separate out,
set apart,
put to one side,
divide,
segregate,
sort out,
sift out,
winnow out,
filter out,
sieve,
eliminate,
get rid of,
remove,
dispense with,
shed,
dump,
lose,
