Remove retry rule in FtpClient.cs

[Yousef-Majidi]

This closes #211

I've removed the retry rule in the CreateInternal method in FtpClient.cs:

• removed the while(true) statement
• removed the attempts variable and incrementation
• removed the if statement checking for the attempt count

In the spirit of improving the code, I also slightly changed the ExistsInternal method to simplify the resource management and simplify the code slightly.

but let me know if you want me to revert the changes made to ExistsInternal

P.S. Could you kindly please add the label hacktoberfest-accepted to this pull request?

Thank you.

[AppVeyorBot]

✅ Build CrispyWaffle 4.2.127 completed (commit af2e89ed75 by @Yousef-Majidi)

[guibranco]

@Yousef-Majidi thanks for the PR and the improvements! Accepted.

Also, I added the label that you requested! When you refresh your Hacktoberfest Profile it will be there

[Yousef-Majidi]

Thank you @guibranco for the quick merge.

I noticed you added the hacktoberfest label, and I appreciate that, but could you also add hacktoberfest-accepted as well, please?

It was a pleasure contributing to your project.