migration guides: remove index reference to BB_SETSCENE_VERIFY_FUNCTION2

This variable is no longer documented in Bitbake's manual
as it's not in use any more.

(From yocto-docs rev: 68328d93023d2e3251a05ea2830c4f6b6de65708)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/migration-guides/migration-2.2.rst

@@ -308,7 +308,7 @@ The following changes took place for BitBake:
    to cause any problems for most users. However, the setscene
    verification function as pointed to by
    ``BB_SETSCENE_VERIFY_FUNCTION`` needed to change signature.
-   Consequently, a new variable named :term:`BB_SETSCENE_VERIFY_FUNCTION2`
+   Consequently, a new variable named ``BB_SETSCENE_VERIFY_FUNCTION2``
    has been added allowing multiple versions of BitBake to work with
    suitably written metadata, which includes OpenEmbedded-Core and Poky.
    Anyone with custom BitBake task scheduler code might also need to

documentation/migration-guides/migration-2.3.rst

@@ -200,10 +200,10 @@ The following changes took place for BitBake:
    section in the BitBake
    User Manual for additional information.
 
--  ``BB_SETSCENE_VERIFY_FUNCTION`` and :term:`BB_SETSCENE_VERIFY_FUNCTION2`
+-  ``BB_SETSCENE_VERIFY_FUNCTION`` and ``BB_SETSCENE_VERIFY_FUNCTION2``
    Removed: Because the mechanism they were part of is no longer
    necessary with recipe-specific sysroots, the
-   ``BB_SETSCENE_VERIFY_FUNCTION`` and :term:`BB_SETSCENE_VERIFY_FUNCTION2`
+   ``BB_SETSCENE_VERIFY_FUNCTION`` and ``BB_SETSCENE_VERIFY_FUNCTION2``
    variables have been removed.
 
 .. _migration-2.3-absolute-symlinks: