Patch for disable emit_environment_object() for dppl context

[PokhodenkoSA]

Change introduced in 947b407 by @reazulhoque.

[PokhodenkoSA]

Try to remove and run checks. @diptorupd faced segfaults some time ago without this modifications.
If tests will pass then it could be removed.

[diptorupd]

Previously, we were running spirv-val on the SPIR-V binary we generated from Numba. The change was added by me to avoid a spirv-val error that is caused because by default Numba passes a global pointer as an argument to the generated function. The reasoning most likely is that a device function cannot access a global pointer in the host address space and thus it should be disallowed.

However, we never pass anything using the global pointer and it is never accessed, so it might be fine just reverting the change. We have turned off spirv-val a while back to get around other issues that are benign but flagged by spirv-val, so reverting the change should not cause a spirv-val error.

If after reverting the change, the tests pass then we should merge.

@PokhodenkoSA If we remove the code in lowering.py please also remove this line in our target.py

numba/numba/dppl/target.py

Line 97 in de35af5

context_name = "dppl.jit"

[PokhodenkoSA]

@PokhodenkoSA If we remove the code in lowering.py please also remove this line in our target.py

numba/numba/dppl/target.py

Line 97 in de35af5

context_name = "dppl.jit"

Created for it - IntelPython/numba-dpex#6

[PokhodenkoSA]

Tested locally - no new failed tests. Will merge it.