clear some doc in files

4 jobs for master in 6 minutes and 57 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed package #2765
r-base-biosp

00:02:17

passed package-devel #2766
r-devel-biosp

00:02:55

passed package-mac #2768
Mac R

00:02:54

passed package-windows #2767
win10 R binaries

00:06:56