Revert "Trim EXTRAVERSION in the Makefile on CI builds"

This reverts commit 89c7d2ae30, which
was causing kernel modules to be installed in a location other than
/lib/modules/$(uname -r), preventing modprobe from locating them.

CI builds no longer contain the Pagure UID in the package release:
https://github.com/CentOS-PaaS-SIG/upstream-fedora-pipeline/pull/199

kernel.spec

@@ -1427,9 +1427,7 @@ BuildKernel() {
     %endif
 
     # make sure EXTRAVERSION says what we want it to say
-    # Trim the release if this is a CI build, since KERNELVERSION is limited to 64 characters
-    ShortRel=$(perl -e "print \"%{release}\" =~ s/\.pr\.[0-9A-Fa-f]{32}//r")
-    perl -p -i -e "s/^EXTRAVERSION.*/EXTRAVERSION = -${ShortRel}.%{_target_cpu}${Flav}/" Makefile
+    perl -p -i -e "s/^EXTRAVERSION.*/EXTRAVERSION = -%{release}.%{_target_cpu}${Flav}/" Makefile
 
     # if pre-rc1 devel kernel, must fix up PATCHLEVEL for our versioning scheme
     %if !0%{?rcrev}