Clean up anaconda repository #343

Job	Run time
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	1m 9s
Clean up anaconda packages (dppy/dpnp)	1m 27s
Clean up anaconda packages (dppy/numba-mlir)	1m 16s
Clean up anaconda packages (dppy/dpctl)	1m 21s
Clean up anaconda packages (dppy/numba-dpex)	1m 15s
Clean up anaconda packages (dppy/dpbench)	1m 17s
	7m 45s

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