Remove unused function

libtevent.spec

@@ -84,21 +84,6 @@ Python 3 bindings for libtevent
 %endif
 
 %prep
-# Update timestamps on the files touched by a patch, to avoid non-equal
-# .pyc/.pyo files across the multilib peers within a build, where "Level"
-# is the patch prefix option (e.g. -p1)
-# Taken from specfile for python-simplejson
-UpdateTimestamps() {
-  Level=$1
-  PatchFile=$2
-
-  # Locate the affected files:
-  for f in $(diffstat $Level -l $PatchFile); do
-    # Set the files to have the same timestamp as that of the patch:
-    touch -r $PatchFile $f
-  done
-}
-
 %autosetup -n tevent-%{version} -p1
 
 %build