Clean up anaconda repository #421

Job	Run time
Clean up anaconda packages (dppy/numba-mlir)	1m 13s
Clean up anaconda packages (dppy/numba-dpex)	41s
Clean up anaconda packages (dppy/dpnp)	47s
Clean up anaconda packages (dppy/dpbench)	45s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	40s
Clean up anaconda packages (dppy/dpctl)	1m 6s
	5m 12s

Provide feedback