Clean up anaconda repository #410

Job	Run time
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	56s
Clean up anaconda packages (dppy/dpctl)	58s
Clean up anaconda packages (dppy/numba-dpex)	41s
Clean up anaconda packages (dppy/dpbench)	40s
Clean up anaconda packages (dppy/numba-mlir)	55s
Clean up anaconda packages (dppy/dpnp)	49s
	4m 59s

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