tools: remove dubious CR and SUBJECT handling

CR is (seemingly) unused, while the SUBJECT cannot be multi-line, so the
xargs doesn't do anything.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

tools/extract-patch-data.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-CR=$(printf "\r")
-
 while read current_line
 do
     if [[ $current_line =~ ^Filename:* ]]; then
@@ -40,8 +38,6 @@ done
 # echo LICENSE: $LICENSE
 # echo -e MESSAGE: $MESSAGE
 
-SUBJECT=`echo $SUBJECT | xargs`
-
 echo "|**$SUBJECT**" \
      "<br><sub><nobr>"$DATE"</nobr>" \
      "<br>File: [$FILENAME](/build/patches/$FILENAME)" \