Clean up anaconda repository #452

Job	Run time
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	55s
Clean up anaconda packages (dppy/dpbench)	1m 23s
Clean up anaconda packages (dppy/dpnp)	47s
Clean up anaconda packages (dppy/numba-dpex)	41s
Clean up anaconda packages (dppy/dpctl)	52s
Clean up anaconda packages (dppy/numba-mlir)	43s
	5m 21s

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