don't display profile in banner if default

IPython/frontend/terminal/interactiveshell.py

@@ -193,7 +193,7 b' class TerminalInteractiveShell(InteractiveShell):'
 
     def compute_banner(self):
         self.banner = self.banner1
-        if self.profile:
+        if self.profile and self.profile != 'default':
             self.banner += '\nIPython profile: %s\n' % self.profile
         if self.banner2:
             self.banner += '\n' + self.banner2