treewide: remove image-prelink bbclass usage

Upstream has removed the image-prelink bbclass[1], so remove it from any
local.conf.sample that still has it enabled.

1. https://git.openembedded.org/openembedded-core/commit/?id=857baaf9e3d181ca18264e85d90b899fd94acff9

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I70f42f8816f5dea207fcf5c34837d6796b3f6bb6
diff --git a/meta-tyan/meta-s7106/conf/local.conf.sample b/meta-tyan/meta-s7106/conf/local.conf.sample
index 1cfd495..c9f35db 100644
--- a/meta-tyan/meta-s7106/conf/local.conf.sample
+++ b/meta-tyan/meta-s7106/conf/local.conf.sample
@@ -3,7 +3,7 @@
 PACKAGE_CLASSES ?= "package_ipk"
 SANITY_TESTED_DISTROS:append ?= " *"
 EXTRA_IMAGE_FEATURES = "debug-tweaks"
-USER_CLASSES ?= "buildstats image-prelink"
+USER_CLASSES ?= "buildstats"
 PATCHRESOLVE = "noop"
 BB_DISKMON_DIRS = "\
     STOPTASKS,${TMPDIR},1G,100K \