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Clean up anaconda repository #568

Job	Run time
Clean up anaconda packages (dppy/dpctl)	58s
Clean up anaconda packages (dppy/numba-dpex)	53s
Clean up anaconda packages (dppy/dpbench)	58s
Clean up anaconda packages (dppy/numba-mlir)	56s
Clean up anaconda packages (dppy/dpnp)	43s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	57s
	5m 25s