Clean up anaconda repository #282

Job	Run time
Clean up anaconda packages (dppy/dpnp)	1m 15s
Clean up anaconda packages (dppy/numba-dpex)	59s
Clean up anaconda packages (dppy/dpctl)	1m 20s
Clean up anaconda packages (dppy/numba-mlir)	1m 7s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	1m 3s
Clean up anaconda packages (dppy/dpbench)	1m 9s
	6m 53s

Provide feedback