Remove firstdef from DispatcherObject
Remove firstdef from DispatcherObject

It is set but never used.

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