Clean up anaconda repository #361

Job	Run time
Clean up anaconda packages (dppy/numba-mlir)	1m 12s
Clean up anaconda packages (dppy/numba-dpex)	1m 18s
Clean up anaconda packages (dppy/dpctl)	56s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	1m 25s
Clean up anaconda packages (dppy/dpbench)	1m 21s
Clean up anaconda packages (dppy/dpnp)	1m 18s
	7m 30s

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