Merge branch 'delete-broken-operator' into 'master'

Delete broken operators

See merge request !49
9 jobs for master in 9 minutes and 42 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #67890
VS2015
VS2015-32-bit

00:01:09

passed #67889
VS2015
VS2015-64-bit

00:01:21

passed #67888
VS2017
VS2017-32-bit

00:01:09

passed #67887
VS2015
VS2017-64-bit

00:01:27

passed #67884
Linux
clang-c++11

00:03:45

passed #67886
Linux
cppcheck

00:00:50

passed #67891
Linux
doc

00:00:21

passed #67883
Linux
gcc-c++11

00:02:03

passed #67885
Apple
macos-c++11

00:01:40