Remove duplicated check table in MultiTypeSymbolTable

[stress-tess]

The check function in MultiTypeSymbolTable.chpl checks if a symbol is in tab and throws a UnknownSymbolError if not.
https://github.com/mhmerrill/arkouda/blob/62611aec7552038276209124b83ab15e7cc50b9f/src/MultiTypeSymbolTable.chpl#L267-L280

This logic is duplicated in other functions in MultiTypeSymbolTable.chpl . A good example is in lookup
https://github.com/mhmerrill/arkouda/blob/62611aec7552038276209124b83ab15e7cc50b9f/src/MultiTypeSymbolTable.chpl#L249-L262

I'll update the functions of MultiTypeSymbolTable to call the existing check function