Using a deprecated function name as a variable will print a warning

[PlatinMTA]

Describe the bug
You can't call a variable banIP or banSerial without getting an output on the server console/log.

To reproduce

-- serverside
banIP = "192.168.1.69"

Run that code and you will see and output similar to this:

[Server] banIP no longer works. Please manually update this. Refer to the wiki for details

Expected behaviour
It should only tell you that if you are trying to use the function banIP

Version
Server: r20488

Additional context
This isn't that important, but w/e

[Pirulax]

the outdated function checker is very bad, at best. It also flags other old function names, if it finds them in the code, probably using an strcmp, or something.

[Fernando-A-Rocha]

https://github.com/multitheftauto/mtasa-blue/blob/master/Server/mods/deathmatch/logic/CResourceChecker.cpp#L721

mtasa-blue/Server/mods/deathmatch/logic/CResourceChecker.cpp

Line 702 in 3ac6dc9

void CResourceChecker::IssueLuaFunctionNameWarnings(const string& strFunctionName, const string& strFileName, const string& strResourceName, bool bClientScript,

what should be done about this checker?