blow away three more changes files that got into 0.2.4

changes/bug9063

@@ -1,4 +0,0 @@
-   o Normal bugfixes:
-     - Close any circuit that has 10% more cells queued than the spec permits
-       and warn when the queue length exceeds that threshold.  Fixes bug
-       #9063; bugfix on 0.2.4.12.

changes/bug9288

@@ -1,4 +0,0 @@
-  o Minor bugfixes:
-    - Fix an invalid memory read that occured when a pluggable
-      transport proxy failed its configuration protocol.
-      Fixes bug 9288.

changes/bug9309

@@ -1,6 +0,0 @@
-  o Minor bugfixes:
-    - When evaluating whether to use a connection that we haven't
-      decided is canonical using a recent link protocol version,
-      decide that it's canonical only if it used address _does_
-      match the desired address. Fixes bug 9309; bugfix on
-      0.2.4.4-alpha. Reported by skruffy.