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Clean up anaconda repository #538

Job	Run time
Clean up anaconda packages (dppy/numba-mlir)	52s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	58s
Clean up anaconda packages (dppy/dpctl)	59s
Clean up anaconda packages (dppy/numba-dpex)	1m 3s
Clean up anaconda packages (dppy/dpnp)	55s
Clean up anaconda packages (dppy/dpbench)	52s
	5m 39s