[flang][docs] Remove stale inline links to Intel and IBM compiler option

Remove all inline links to Intel and IBM compiler options from the
comparison tables, as these links have become stale (Intel links
redirect to generic pages, IBM links redirect to PDF-only pages).

Option names are preserved for readability. The Data sources section
still contains links to the main documentation pages.

Details:

- Removed 43 Intel compiler option links
- Removed 35 IBM compiler option links
- Removed 2 stale links in notes section
- Updated documentation text accordingly

Fixes #171464

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Co-authored-by: Tarun Prabhu <tarun@lanl.gov>

Author: Aashcharya1