HBASE-16354 Clean up defunct github PRs

* closes #34 mistaken branch-1.3 merge
* closes #32 no response from contributor in a month
* closes #31 no response from contributor in a month
* closes #30 no response from contributor in 2.5 months
* closes #29 fixed in HBASE-15863
* closes #25 no response from contributor in 4.5 months and obviated by HBASE-16340
* closes #24 no response from contributor in 4.5 months
* closes #22 jira HBASE-14442 closed as stale
* closes #16 fixed in HBASE-15574
* closes #13 no response from contributor in 4.5 months
* closes #11 no response from contributor in 4.5 months and obviated by HBASE-15265
* closes #4 no response from contributor in 4.5 months

Signed-off-by: Dima Spivak <dspivak@cloudera.com>
Signed-off-by: Esteban Gutierrez <esteban@apache.org>