Tools:nuttx_defconf_tool upstream has CONFIG_START_YEAR etal

Re insetion of CONFIG_START_{YEAR|NONTH|DAY} is not needed as
   CONFIG_START_{YEAR|NONTH|DAY} have been defined always in
   upstream NuttX

Tools/nuttx_defconf_tool.sh

@@ -1,5 +1,7 @@
 #! /bin/bash
 
+FIXDATE=n
+
 if [ $# -eq 0 ]
   then
     echo "Usage: $0 <path to defconfig>"
@@ -31,8 +33,8 @@ echo "Fix up Board Selection"
 sed -i -e "/$lead/,/$tail/{ /$lead/{p; r $chunk
         }; /$tail/p; d }" $defconf
 
-
+if [ "$FIXDATE" == "y" ] ; then
-if grep --quiet CONFIG_START_YEAR $lastconf ; then
+  if grep --quiet CONFIG_START_YEAR $lastconf ; then
     lead='^CONFIG_START_YEAR='
     tail='^CONFIG_START_DAY='
     cat $lastconf | sed -n "/$lead/,/$tail/p" > $chunk
@@ -40,9 +42,9 @@ if grep --quiet CONFIG_START_YEAR $lastconf ; then
     echo "Fix up Clocks and Timers"
     sed -i -e "/$lead/{N;{r $chunk
       }}" $defconf
-else
+  else
   echo not found
+  fi
 fi
-
 rm $lastconf
 rm $chunk