Revert "relax cppcheck until cleaned up"

This reverts commit 6ff4e080.
9 jobs for cleanup in 2 minutes and 54 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #75260
VS2015
VS2015-32-bit

00:01:16

passed #75259
VS2015
VS2015-64-bit

00:01:19

passed #75258
VS2017
VS2017-32-bit

00:01:09

passed #75257
VS2015
VS2017-64-bit

00:01:17

passed #75254
Linux
clang-c++11

00:01:51

passed #75256
Linux
cppcheck

00:00:22

passed #75261
Linux
doc

00:00:18

passed #75253
Linux
gcc-c++11

00:02:47

passed #75255
Apple
macos-c++11

00:01:37