Hi ppl,this is my actual springboard.strings

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>AWAY_LOCK_LABEL</key>
<string> </string>
<key>CF_USER_NOTE_LOCK_LABEL</key>
<string> </string>
<key>SLIDE_TO_ANSWER</key>
<string> </string>
<key>SMS_LOCK_LABEL</key>
<string> </string>
<key>TIMER_LOCK_LABEL</key>
<string> </string>
<key>ALARM_LOCK_LABEL</key>
<string> </string>
<key>CALENDAR_LOCK_LABEL</key>
<string> </string>
<key>SLIDE_TO_CANCEL</key>
<string> </string>
<key>POWER_DOWN_LOCK_LABEL</key>
<string>slide to power off</string>
</dict>
</plist>
when i receive a msg on Whatsapp application im getting the "Show" text on the lockscreen slider. How i can remove this?