Remove changes files got merged in 0.2.9.6-rc and earlier

These won't appear in the 0.3.0.1-alpha changelog, so we don't want
to keep them around here.

List generated with ./scripts/maint/findMergedChanges.pl

changes/bug20085

@@ -1,4 +0,0 @@
-  o Documentation:
-    - Correct the minimum bandwidth value in torrc.sample, and queue a
-      corresponding change for torrc.minimal. Closes ticket 20085.
-

changes/bug20235

@@ -1,4 +0,0 @@
-  o Minor features (compatibility):
-    - Work around a bug in the OSX 10.12 SDK that would prevent us
-      from successfully targetting earlier versions of OSX.
-      Resolves ticket 20235.

changes/bug20306_029

@@ -1,4 +0,0 @@
-  o Minor bugfixes (fascistfirewall):
-    - Avoid spurious warnings when ReachableAddresses or FascistFirewall
-      is set. Fixes bug 20306; bugfix on 0.2.8.2-alpha.
-

changes/bug20423

@@ -1,6 +0,0 @@
-  o Major bugfixes:
-    - For relays that don't know their own address, avoid attempting
-      a local hostname resolve for each descriptor we download. Also cut
-      down on the number of "Success: chose address 'x.x.x.x'" log lines.
-      Fixes bugs 20423 and 20610; bugfix on 0.2.8.1-alpha.
-

changes/bug20560

@@ -1,4 +0,0 @@
-  o Minor bugfixes (portability):
-    - Run correctly when built on Windows build environments that require
-      _vcsprintf(). Fixes bug 20560; bugfix on 0.2.2.11-alpha.
-

changes/bug20597

@@ -1,5 +0,0 @@
-  o Minor bugfixes (test networks, exponential backoff):
-    - When using exponential backoff in test networks, use a lower exponent,
-      so the delays do not vary as much. This helps test networks bootstrap
-      consistently. Fixes bug 20597; bugfix on 20499; not in any released
-      version of tor.

changes/bug20613

@@ -1,6 +0,0 @@
-  o Minor bugfixes (single onion services, Tor2web):
-    - Stop logging long-term one-hop circuits deliberately created by single
-      onion services and Tor2web. These log messages are intended to diagnose
-      issue 8387, which relates to circuits hanging around forever for no
-      reason.
-      Fixes bug 20613; bugfix on 0.2.9.1-alpha. Reported by "pastly".

changes/bug20634

@@ -1,3 +0,0 @@
-  o Minor bugfixes (unit tests):
-    - Stop spurious failures in the local interface address discovery unit
-      tests. Fixes bug 20634; bugfix on 0.2.8.1-alpha; patch by Neel Chauhan.

changes/bug20638

@@ -1,5 +0,0 @@
-  o Minor bugfixes (hidden services):
-    - Stop ignoring hidden service key anonymity when first starting tor.
-      Instead, refuse to start tor if any hidden service key has been used in
-      a different hidden service anonymity mode.
-      Fixes bug 20638; bugfix on 17178 in 0.2.9.3-alpha; reported by ahf.