Clean up anaconda repository #441

Job	Run time
Clean up anaconda packages (dppy/dpbench)	54s
Clean up anaconda packages (dppy/numba-mlir)	45s
Clean up anaconda packages (dppy/dpctl)	55s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	1m 0s
Clean up anaconda packages (dppy/numba-dpex)	1m 6s
Clean up anaconda packages (dppy/dpnp)	49s
	5m 29s

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