Remove CapitalizationInSelector linter

This has been superseded by the new `SelectorFormat` linter.

Change-Id: I0fa4fbc9c78d6b3672774a2dd9a23ba355f60dab
Reviewed-on: http://gerrit.causes.com/43026
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>