Removing duplicates

--- voters_list_1.csv   2017-03-10 21:07:38.783852332 +0530
+++ voters_list_2.csv   2017-03-10 21:04:25.951858029 +0530
@@ -14,9 +14,9 @@
 Akashyeshwanth,dontforgetgirish@gmail.com
 Akshat1997,akshat28101997@gmail.com
 Amarjeet,amarjeet736@gmail.com
-americast,sayan.sinha@iitkgp.ac.in
+,
 Americast,sayan.sinha@iitkgp.ac.in
-Amrav,vikrant.varma94@gmail.com
+,
 Ananya,
 Anchit.6065,
 Angry Bitch,jomarch121@gmail.com
@@ -30,11 +30,11 @@
 Arafat,arafat.da.khan@gmail.com
 Ardentsatish,
 Artagnon,artagnon@gmail.com
-Arunpatro,arun.kumar.patro@gmail.com
+,
 Arun Patro,arun.kumar.patro@gmail.com
 A S Duddu,aduddu@gmail.com
-athityakumar,athityakumar@gmail.com
-Athityakumar,athityakumar@gmail.com
+,
+,
 Athitya Kumar,athityakumar@gmail.com
 AvijitGhosh82,avijitg22@gmail.com
 Ayush Goyal,ayushgoyal.iitkgp@gmail.com
@@ -67,15 +67,15 @@
 GitHub,noreply@github.com
 Goddess Toning Review,arunraj211991@gmail.com
 Gyan,gyan.darshan01@gmail.com
-Hargup,gupta.harsh96@gmail.com
-Harsh Gupta,gupta.harsh96@gmail.com
-Harsh Gupta,hargup@metakgp.org
+,
+,
+,
 Harsh Gupta,mail@hargup.in
 Hgfxdgufoihxdoihgfiphxphdg,emibakya@gmail.com
 Hkhkjhuykuyk,
 Holdencaulfield,
 iamharshit,harshitagarwal37@gmail.com
-Iamharshit,harshitagarwal37@gmail.com
+,
 Iashris,ashris.iitkgp@gmail.com
 Icyflame,kannan.siddharth12@gmail.com
 Jacqueline B Frost,jacquelinebfrost@gmail.com
@@ -92,7 +92,7 @@
 KristopherSpeigh,1ngaychungdoi@gmail.com
 Krozaine,shubhamwaghe@gmail.com
 kshitij10496,KshitijSaraogi@gmail.com
-Kshitij10496,KshitijSaraogi@gmail.com
+,
 Kumarkrishna,
 Kumar Krishna Agrawal,kumar.1994.14@gmail.com
 Kunaljaincfc,kunaljaincfc@gmail.com
@@ -117,7 +117,7 @@
 Naitik,njain1804@gmail.com
 Navyamokmod,navya.mokmod@gmailcom
 Nehagoel,
-Nevinvalsaraj,nevin.valsaraj32@gmail.com
+,
 Nevin Valsaraj,nevin.valsaraj32@gmail.com
 NielSparker,
 Nikesharyan,nikesharyan007@gmail.com
@@ -144,7 +144,7 @@
 Pratham pc,pc44800@gmail.com
 Pratikanubhav,pratikanubhav00@gmail.com
 Prince sahu,princesahu04@gmail.com
-Pungi-man,pranit.bauva@gmail.com
+,
 Pwngpt,
 Rachit379,
 Raja Dubey,rkdubey1677@gmail.com
@@ -171,9 +171,9 @@
 Shubham,shubham01041996@gmail.com
 Shushman,shushmanchoudhury@gmail.com
 Siddharth Kannan,kannan.siddharth12@gmail.com
-Siddharth Kannan,kannan.siddharth12@protonmail.com
-Siddharth Kannan,siddharthkannan@protonmail.com
-Siddharth Kannan,siddharthkannan@tutanota.com
+,
+,
+,
 Siva.praneeth1,siva.praneeth1@gmail.com
 Skydoc28,
 Skyflyers,14101997deepak@gmail.com
@@ -199,14 +199,13 @@
 Vivek Aithal,vivekaithal44@gmail.com
 vivekmudgal001,vivekmudgal001@gmail.com
 Vivek Rai,vivekrai.iitkgp@gmail.com
-Vivek Rai,vivekraiiitkgp@gmail.com
+,
 Whiplash,
 Words that Make Him Love You Review,
 Xtinct,vivekrai.iitkgp@gmail.com
 Yash Gaurkar,yashgaurkar@gmail.com
 Yeban,anurag08priyam@gmail.com
 Ypranay,y.pranay@gmail.com
-zishan sami,zishan sami
+,
 zishan sami,zishansami102@gmail.com
-Zola,
-Zorroblue,rameshwar.zorro@gmail.com
\ No newline at end of file
+Zola,
\ No newline at end of file