Clean up anaconda repository #196

Job	Run time
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	54s
Clean up anaconda packages (dppy/numba-mlir)	53s
Clean up anaconda packages (dppy/dpctl)	53s
Clean up anaconda packages (dppy/dpbench)	57s
Clean up anaconda packages (dppy/dpnp)	1m 5s
Clean up anaconda packages (dppy/numba-dpex)	2m 5s
	6m 47s

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