cleanup - removed duplicate const MAX_ACTUATORS definition

[BazookaJoe1900]

There are two dupliacate const definitions, one global and one in the class, which is singletone anyway.
The definition is duplicated to _max_actuators

[dagar]

Keep the upper case naming for a constant? MAX_ACTUATORS

[dagar]

Hmm, upper case with underscore doesn't look quite right, but let's go with it for now.
This is probably a good example of why we need a coding standard for naming constants, member variables, etc.

Thanks @BazookaJoe1900

[dagar]

Google c++ style guide? https://google.github.io/styleguide/cppguide.html#Constant_Names

[BazookaJoe1900]

Sorry about the bad coding standard.. I was rushing doing the pr.
I will fix that.... but in two days. Wait with the marging

[dagar]

No need to apologize, the problem is there's no (written) coding standard

[dagar]

It's still nice to get rid of the duplication and easy to change later. Thanks again.