Remove changes files from master that will appear in 0.4.5.6

changes/bug40281

@@ -1,6 +0,0 @@
-  o Minor bugfixes (logging):
-    - Avoid a spurious log message about missing subprotocol versions, when
-      the consensus that we're reading from is older than the current
-      release. .  Previously we had made this message nonfatal in this case,
-      but in practice, it is never relevant when the consensus is older than
-      the current release.  Fixes bug 40281; bugfix on 0.4.0.1-alpha.

changes/ticket40208

@@ -1,6 +0,0 @@
-  o Minor bugfixes (relay):
-    - Allow relays to have a RFC1918 address if PublishServerDescriptor is set
-      to 0 and AssumeReachable is set to 1. This is to support the use case of a
-      bridge on a local network that can be used by restricted users on that
-      network to reach the Tor network. Fixes bug 40208; bugfix on
-      0.4.5.1-alpha.

changes/ticket40221_045

@@ -1,6 +0,0 @@
-  o Minor features (protocol versions):
-    - Stop claiming to support the "DirCache=1" subprotocol version.
-      Technically, we stopped supporting this subprotocol back in
-      0.4.5.1-alpha, but we needed to wait for the authorities to stop
-      listing it as "required" before we can drop support. Closes ticket
-      40221.

changes/ticket40257

@@ -1,3 +0,0 @@
-  o Minor bugfixes (metrics port):
-    - Fix a bug warning when the socket was unexpectedly closed. Fixes bug
-      40257; bugfix on 0.4.5.1-alpha

changes/ticket40279

@@ -1,4 +0,0 @@
-  o Major bugfixes (IPv6, relay):
-    - Fix a bug that prevented a relay to publish its descriptor in the case of
-      an auto-discovered IPv6 that was found unreachable for which we always
-      publish if the IPv4 is correct. Fixes bug 40279; bugfix on 0.4.5.1-alpha.

changes/ticket40289

@@ -1,6 +0,0 @@
-  o Minor bugfixes (relay, config):
-    - Fix a problem in the removal of duplicate ORPort from the internal port
-      list when loading config file. We were removing wrong ports breaking valid
-      torrc uses cases for multiple ORPorts of the same address family. Fixes
-      bug 40289; bugfix on 0.4.5.1-alpha.
-