Remove functions that throw status error.

[ysiraichi]

Follow-up: #9580

This PR finalizes the work that started with #9580 for replacing OkOrThrow() and GetValueOrThrow() in favor of the macros introduced in #9588 (which were also part of that work). In summary, is the last one after:

• Replace OkOrThrow() and GetValueOrThrow() with macros for throwing status errors. #9580: initial work that was broken down into the PRs below
• Create new macros for throwing status errors. #9588: actual first PR merged
• test: Use new macros for throwing exceptions. #9590
• runtime: Use new macros for throwing exceptions. #9591
• ops: Use new macros for throwing exceptions. #9592
• torch_xla: Use new macros for throwing exceptions (part 1). #9593
• torch_xla: Use new macros for throwing exceptions (part 2). #9594
• init_python_bindings.cpp: Use new macros for throwing exceptions. #9595
• aten_xla_type.cpp: Use new macros for throwing exceptions. #9596
• Remove functions that throw status error. #9602: last PR

Key Changes:

• (test/cpp/test_status_common.h) Remove tests for OkOrThrow() and GetValueOrThrow()
• (torch_xla/csrc/status.{h,cpp}) Remove the implementation of those functions