Revert "Update CHANGES and UPGRADE.txt for 16.6.0-rc2"

This reverts commit a0844a9b9b.

Correcting/reverting accidental
upgrade on release process.

Change-Id: I08746eda578effa6e64054690fad48a17d2f42e7

CHANGES

@@ -12,32 +12,6 @@
 ===
 ==============================================================================
 
-------------------------------------------------------------------------------
---- Functionality changes from Asterisk 16.0 to Asterisk 16.6.0-rc2 ----------
-------------------------------------------------------------------------------
-
-Core
-------------------
- * H.265/HEVC is now a supported video codec and it can be used by
-   specifying "h265" in the allow line.
-   Please note however, that handling of the additional SDP parameters
-   described in RFC 7798 section 7.2 is not yet supported.
-
-func_jitterbuffer
-------------------
- * The JITTERBUFFER dialplan function now has an option to enable video synchronization
-   support. When enabled and used with a compatible channel driver (chan_sip, chan_pjsip)
-   the video is buffered according to the size of the audio jitterbuffer and is
-   synchronized to the audio.
-
-taskprocessor.c
-------------------
- * Added two new CLI commands to reset stats for taskprocessors. You can
-   reset stats for a single, specific taskprocessor ('core reset
-   taskprocessor <taskprocessor>'), or you can reset all taskprocessors
-   ('core reset taskprocessors'). These commands will reset the counter for
-   the number of tasks processed as well as the max queue size.
-
 ------------------------------------------------------------------------------
 --- Functionality changes from Asterisk 16.5.0 to Asterisk 16.6.0 ------------
 ------------------------------------------------------------------------------

doc/CHANGES-staging/func_jitterbuffer_video.txt

@@ -0,0 +1,6 @@
+Subject: func_jitterbuffer
+
+The JITTERBUFFER dialplan function now has an option to enable video synchronization
+support. When enabled and used with a compatible channel driver (chan_sip, chan_pjsip)
+the video is buffered according to the size of the audio jitterbuffer and is
+synchronized to the audio.

doc/CHANGES-staging/h265-passthrough.txt

@@ -0,0 +1,6 @@
+Subject: Core
+
+H.265/HEVC is now a supported video codec and it can be used by
+specifying "h265" in the allow line.
+Please note however, that handling of the additional SDP parameters
+described in RFC 7798 section 7.2 is not yet supported.

doc/CHANGES-staging/taskprocessor-reset-stats.txt

@@ -0,0 +1,7 @@
+Subject: taskprocessor.c
+
+Added two new CLI commands to reset stats for taskprocessors. You can
+reset stats for a single, specific taskprocessor ('core reset
+taskprocessor <taskprocessor>'), or you can reset all taskprocessors
+('core reset taskprocessors'). These commands will reset the counter for
+the number of tasks processed as well as the max queue size.