pgsql: amcheck: Remove unused IndexCheckableCallback typedef.

amcheck: Remove unused IndexCheckableCallback typedef.

Commit d70b17636dd introduced the IndexCheckableCallback typedef for
a callback function, but it was never used. This commit removes
the unused typedef to clean up dead code.

Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru>
Discussion: https://postgr.es/m/e1ea4e14-3b21-4e01-a5f2-0686883265df@oss.nttdata.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/d64d68fddf9802dea4cc5be8a491937c3aefefa0

Modified Files
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contrib/amcheck/verify_common.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)