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

pysim-testdata/Fairwaves-SIM.ok

@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=0) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: Fairwaves-SIM
 ICCID: 8988219000000117833

pysim-testdata/Wavemobile-SIM.ok

@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=3) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: Wavemobile-SIM
 ICCID: 89445310150011013678

pysim-testdata/fakemagicsim.ok

@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=5) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: fakemagicsim
 Can't read AIDs from SIM -- SW match failed! Expected 9000 and got 9404.

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

pysim-testdata/sysmoUSIM-SJS1.ok

@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=1) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: sysmoUSIM-SJS1
 ICCID: 1122334455667788990

pysim-testdata/sysmosim-gr1.ok

@@ -1,4 +1,4 @@
-Using PC/SC reader (dev=0) interface
+Using PC/SC reader interface
 Reading ...
 Autodetected card type: sysmosim-gr1
 Can't read AIDs from SIM -- SW match failed! Expected 9000 and got 9404.