Remove unnecessary extra-intersphinx.txt

12 jobs for doc in 20 minutes and 2 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #99232
conda-linux
build_linux_27

00:01:30

passed #99233
conda-linux
build_linux_35

00:01:17

passed #99234
conda-linux
build_linux_36

00:01:23

passed #99235
conda-macosx
build_macosx_27

00:02:37

passed #99236
conda-macosx
build_macosx_35

00:02:47

passed #99237
conda-macosx
build_macosx_36

00:02:33

 
  Test
passed #99238
conda-linux
test_linux_27

00:01:26

30.0%
passed #99239
conda-linux
test_linux_35

00:01:43

30.0%
passed #99240
conda-linux
test_linux_36

00:01:18

30.0%
passed #99241
conda-macosx
test_macosx_27

00:02:11

30.0%
passed #99242
conda-macosx
test_macosx_35

00:01:58

30.0%
passed #99243
conda-macosx
test_macosx_36

00:01:52

30.0%