bsc_control.py: style corrections

* replace some tabs indent with spaces
* add comment to make sure no new tabs are used for indentation by emacs
* remove unnecessary parenthesis

Change-Id: Ib79fd4317d40ee4fd87b090b9faf8ebaf4bfca64

openbsc/contrib/bsc_control.py

@@ -1,4 +1,5 @@
 #!/usr/bin/python
+# -*- mode: python-mode; py-indent-tabs-mode: nil -*-
 
 import sys,os, random
 from optparse import OptionParser
@@ -117,13 +118,13 @@ if __name__ == '__main__':
 	        print "Got message:", answer
 
         if options.monitor:
-	        while (True):
+                while True:
                         data = sock.recv(1024)
                         if len(data) == 0:
                                 print "Connection is gone."
                                 break
 
-		        while (len(data)>0):
+                        while len(data) > 0:
                                 (answer, data) = remove_ipa_ctrl_header(data)
                                 print "Got message:", answer