cc_configure: Remove hardcoded link option "-B/usr/bin"

[mzeren-vmw]

Putting -B/usr/bin on the link line breaks use of custom C/C++ toolchain
since support binaries such as ld, as, etc., will incorrectly "leak" to
the build machine.

Fixes #5634

Archeaology: It looks like this logic was originally added here:

810d60a Apr 22 2016 dmarting@google.com
"cc_configure: Add -B to compiler flag too"

.. and that that was done to get Tensor Flow building on some (but failing
on other?) versions of RedHat. #1152.

This may have also "fixed" the hombrew builds for
#1177.

Testing Done:

• Building envoy on older Centos host using non-host
  crosscompiler. Build fails without the fix and succeeds with the fix.

• bazel test //src/test/java/com/google/devtools/build/lib:all
  1 flaky test failed before and after:
  bazel test //src/test/java/com/google/devtools/build/lib:vfs_test

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