Commit ea69a0dead5128c421140dc53fac165ba4af8520 has bumped the hash
index version and obviates the need for backward compatibility code
added by commit 293e24e507838733aba4748b514536af2d39d7f2. The same
has been mentioned in the commit message, please find attached patch
to remove the pre-10 compatibility code in hash index.
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With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com