Remove trailing newline

We definatly break stuff with this, so it must be removed.

src/main.py

@@ -292,7 +292,6 @@ class PassUi(wx.Frame):
         password: str = str()
         for line_no in range(text.GetNumberOfLines()):
             password += text.GetLineText(line_no)
-            password += '\n'  # FIXME: Is this right? Maybe we break stuff with the trailing newline?
 
         self.pass_handler.save_to_pass(password, path, full_path)
         self.back_button_clicked()