title: Find duplicates and delete all in notepad++
body: <p>I have multiple email addresses. I need to find and delete all (including found one). Is this possible in notepad++?</p>
  
  <p>example:<code>epshetsky@test.com,
  rek4@test.com,
  rajesh1239@test.com,
  mohanraj@test.com,
  sam@test.com,
  nithin@test.com,
  midhunvintech@test.com,
  karthickgm27@test.com,
  rajesh1239@test.com,
  mohanraj@test.com,
  nithin@test.com,</code></p>
  
  <p>I need results back like</p>
  
  <p><code>epshetsky@test.com,
  rek4@test.com,
  sam@test.com,
  nithin@test.com,
  midhunvintech@test.com,
  karthickgm27@test.com,</code></p>
  
  <p>How to do in notepad++?</p>