Remove unnecessary commons-lang3:3.1.jar

[activeeon-bot]

Original issue created by Sanka Samaranayake on 25, Sep 2014 at 18:11 PM - PALIGHT-93

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The only use of the jar file is to extends its MutableBoolean class to create another class 'LineBeginBoolean' class to keep track of the begin of a line. This could easily been done without the use of a 'MutableBoolean'.