pgsql: Remove obsolete pg_attrdef.adsrc column

Remove obsolete pg_attrdef.adsrc column

This has been deprecated and effectively unused for a long time.

Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/fe5038236c6b99d48c2faa2247b5cec9703add2a

Modified Files
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doc/src/sgml/catalogs.sgml       | 20 +++-----------------
src/backend/catalog/heap.c       | 12 ------------
src/include/catalog/catversion.h |  2 +-
src/include/catalog/pg_attrdef.h |  1 -
4 files changed, 4 insertions(+), 31 deletions(-)