pgsql: Revert "Prevent incorrect updates of pg_index while reindexing p

Revert "Prevent incorrect updates of pg_index while reindexing pg_index itself."

This reverts commit 4b6106ccfea21e86943f881edcf3cfc03661a415 of 2011-04-15.
There's a better way to do it, which will follow shortly.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/c096d19b74a637443109e528000342e896b150f3

Modified Files
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src/backend/catalog/index.c |   28 ++++------------------------
1 files changed, 4 insertions(+), 24 deletions(-)