remove register_jitable from type checking function
remove register_jitable from type checking function

The type-checking does not need to be compiled. Also, this means
potentially more flexibility.

stuartarchibald/numba,stuartarchibald/numba,gmarkall/numba,stonebig/numba,sklam/numba,stuartarchibald/numba,gmarkall/numba,seibert/numba,stonebig/numba,stonebig/numba,numba/numba,gmarkall/numba,cpcloud/numba,numba/numba,stuartarchibald/numba,IntelLabs/numba,seibert/numba,gmarkall/numba,cpcloud/numba,IntelLabs/numba,seibert/numba,cpcloud/numba,IntelLabs/numba,numba/numba,seibert/numba,stuartarchibald/numba,numba/numba,sklam/numba,sklam/numba,IntelLabs/numba,cpcloud/numba,sklam/numba,stonebig/numba,cpcloud/numba,stonebig/numba,numba/numba,seibert/numba,sklam/numba,IntelLabs/numba,gmarkall/numba