Revert "Export additional __aeabi_ symbols from arm's libgcc_s"

This reverts commit caab831338f4eeaa7455e981478be9fd414b7969, because
some new unresolved issues came up in bug 271087:

Some programs depend on these symbols, when they are compiled for armv6
or armv7. Closes #1560 (slightly changed due to sorting of the symbols).

PR: 271087
Reported by: mmel
MFC after: immediately

(cherry picked from commit b662ca1d6cd82044c6cb79075e1830b97594bef3)