Remove __delitem__ on Value
Remove __delitem__ on Value

vikhyat/dask,jayhetee/dask,ContinuumIO/dask,dask/dask,mikegraham/dask,clarkfitzg/dask,clarkfitzg/dask,PhE/dask,pombredanne/dask,dask/dask,wiso/dask,PhE/dask,wiso/dask,cowlicks/dask,gameduell/dask,blaze/dask,jcrist/dask,jcrist/dask,pombredanne/dask,cpcloud/dask,mrocklin/dask,ssanderson/dask,mraspaud/dask,mrocklin/dask,chrisbarber/dask,blaze/dask,ContinuumIO/dask,ssanderson/dask,mraspaud/dask,jakirkham/dask,jakirkham/dask,vikhyat/dask,jayhetee/dask