[BAZEL] Drop rules_foreign_cc as a dependency

[dws]

It does not appear that the Bazel build of this repo makes any use of rules_foreign_cc, so we here remove its default definition.

Fixes #3600

Changes

We here drop a default definition of rules_foreign_cc from the WORKSPACE-based setup for building this repo under Bazel.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Unit tests have been added
• Changes in public API reviewed

[netlify]

✅ Deploy Preview for opentelemetry-cpp-api-docs canceled.

Name	Link
🔨 Latest commit	902bd57
🔍 Latest deploy log	https://app.netlify.com/projects/opentelemetry-cpp-api-docs/deploys/68a86bd2e2dc8c00084ed25b

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.03%. Comparing base (7c34c0f) to head (902bd57).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3601   +/-   ##
=======================================
  Coverage   90.03%   90.03%           
=======================================
  Files         220      220           
  Lines        7069     7069           
=======================================
  Hits         6364     6364           
  Misses        705      705           

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[marcalff]

LGTM, thanks for the fix.