removing some bug references from the release notes

These bugs were introduced in 2.2.0 and fixed later in the 2.2.0 cycle

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=4cbd0bf82c16f02a8d06c9fedba72ca2388ed256

Modified Files
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RELEASE |    8 --------
1 file changed, 8 deletions(-)