documentation: remove references to prelink support

Fixing documentation and updating examples containing "prelink"
in their output.

(From yocto-docs rev: 8927b8fff55fac1bd1fefcff2d16141dbd1ebc51)

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

documentation/ref-manual/classes.rst

@@ -953,21 +953,6 @@ specified by :term:`EFI_PROVIDER` if
 Normally, you do not use this class directly. Instead, you add "live" to
 :term:`IMAGE_FSTYPES`.
 
-.. _ref-classes-image-prelink:
-
-``image-prelink.bbclass``
-=========================
-
-The ``image-prelink`` class enables the use of the ``prelink`` utility
-during the :ref:`ref-tasks-rootfs` task, which optimizes
-the dynamic linking of shared libraries to reduce executable startup
-time.
-
-By default, the class is enabled in the ``local.conf.template`` using
-the :term:`USER_CLASSES` variable as follows::
-
-   USER_CLASSES ?= "buildstats image-prelink"
-
 .. _ref-classes-insane:
 
 ``insane.bbclass``

documentation/ref-manual/faq.rst

@@ -455,7 +455,4 @@ changing it?
 **A:** The first most obvious change is the system stripping debug symbols from
 it. Setting :term:`INHIBIT_PACKAGE_STRIP` to stop debug symbols being stripped and/or
 :term:`INHIBIT_PACKAGE_DEBUG_SPLIT` to stop debug symbols being split into a separate
-file will ensure the binary is unchanged. The other less obvious thing that can
-happen is prelinking of the image. This is set by default in local.conf via
-:term:`USER_CLASSES` which can contain 'image-prelink'. If you remove that, the
-image will not be prelinked meaning the binaries would be unchanged.
+file will ensure the binary is unchanged.

documentation/ref-manual/variables.rst

@@ -8537,12 +8537,11 @@ system and gives an overview of their function and contents.
 
    :term:`USER_CLASSES`
       A list of classes to globally inherit. These classes are used by the
-      OpenEmbedded build system to enable extra features (e.g.
-      ``buildstats``, ``image-prelink``, and so forth).
+      OpenEmbedded build system to enable extra features.
 
       The default list is set in your ``local.conf`` file::
 
-         USER_CLASSES ?= "buildstats image-prelink"
+         USER_CLASSES ?= "buildstats"
 
       For more information, see
       ``meta-poky/conf/local.conf.sample`` in the :term:`Source Directory`.