Clean up anaconda repository #446

Job	Run time
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	44s
Clean up anaconda packages (dppy/dpctl)	42s
Clean up anaconda packages (dppy/dpnp)	41s
Clean up anaconda packages (dppy/numba-dpex)	1m 10s
Clean up anaconda packages (dppy/numba-mlir)	57s
Clean up anaconda packages (dppy/dpbench)	42s
	4m 56s

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