Revert "kernel: prevent addition of scm marker to localversion"

This reverts commit 0df2c6563a since it
gets in the way of identifying properly which kernel we are running.
This is particularly important if LEDE is using external kernels/git
cloned kernels. We want to make sure we only load modules from that
specific kernel.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

include/kernel-defaults.mk

@@ -42,10 +42,6 @@ ifdef CONFIG_USE_SPARSE
   KERNEL_MAKEOPTS += C=1 CHECK=$(STAGING_DIR_HOST)/bin/sparse
 endif
 
-ifneq ($(strip $(CONFIG_KERNEL_GIT_CLONE_URI)),"")
- KERNEL_MAKEOPTS += LOCALVERSION=
-endif
-
 export HOST_EXTRACFLAGS=-I$(STAGING_DIR_HOST)/include
 
 # defined in quilt.mk