docs: Correct release of TCG trace-events removal

TCG trace-events were deprecated before the v6.2 release,
and removed for v7.0.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/docs/about/removed-features.rst b/docs/about/removed-features.rst
index 68fe0b4..e3a87f3 100644
--- a/docs/about/removed-features.rst
+++ b/docs/about/removed-features.rst
@@ -1087,8 +1087,8 @@
 TCG introspection features
 --------------------------
 
-TCG trace-events (since 6.2)
-''''''''''''''''''''''''''''
+TCG trace-events (removed in 7.0)
+'''''''''''''''''''''''''''''''''
 
 The ability to add new TCG trace points had bit rotted and as the
 feature can be replicated with TCG plugins it was removed. If