docs: programming-language: remove mention of the Intel compiler

docs: programming-language: remove mention of the Intel compiler

The Intel compiler support has been removed in commit 95207db8166a
("Remove Intel compiler support").

Thus remove its mention in the Documentation too.

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20230306191712.230658-1-ojeda@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>