Clean up anaconda repository #417

Job	Run time
Clean up anaconda packages (dppy/numba-dpex)	50s
Clean up anaconda packages (dppy/numba-mlir)	50s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	46s
Clean up anaconda packages (dppy/dpnp)	52s
Clean up anaconda packages (dppy/dpctl)	43s
Clean up anaconda packages (dppy/dpbench)	50s
	4m 51s

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