pySim-prog, pySim-read, do not echo reader id

pySim-prog and pySim-read currently echo back the pcsc reader id (or
baudrate/socket, depending on the interface used). This makes the output
unecessarly undeterministic, which becomes a problem when verifying the
putput in tests. Lets not echo those variable, user supplied parameters
back. Also lets move the code that does the initalization to utils, so
that it can be used from pySim-prog and from pySim-read (code dup).

Change-Id: I243cc332f075d007b1c111292effcc610e874eb3
Related: OS#4503
diff --git a/pysim-testdata/sysmoISIM-SJA2.ok b/pysim-testdata/sysmoISIM-SJA2.ok
index 57500eb..8559bdb 100644
--- a/pysim-testdata/sysmoISIM-SJA2.ok
+++ b/pysim-testdata/sysmoISIM-SJA2.ok
@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=4) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: sysmoISIM-SJA2
 ICCID: 8988211900000000004