this letter doesn't exist in SK alphabet

lang/lang-import.sh

@@ -408,10 +408,6 @@ if [ "$LNG" = "sk" ]; then
  sed -i 's/\xc3\x9a/U/g' $LNG'_filtered.po'
  #replace 'ú' with 'u'
  sed -i 's/\xc3\xba/u/g' $LNG'_filtered.po'
- #replace 'Ů' with 'U'
- sed -i 's/\xc5\xae/U/g' $LNG'_filtered.po'
- #replace 'ů' with 'u'
- sed -i 's/\xc5\xaf/u/g' $LNG'_filtered.po'
  #replace 'Ý' with 'Y'
  sed -i 's/\xc3\x9d/Y/g' $LNG'_filtered.po'
  #replace 'ý' with 'y'