Get rid of [now] superfluous HexAdapter

With the introduction of using osmocom.construct.{Bytes,GreedyBytes}
in Change-Id I1c8df6350c68aa408ec96ff6cd1e405ceb1a4fbb we don't have a
need for wrapping each instance of Bytes or GreedyBytes into a
HexAdapter anymore.  The osmocom.construct.{Bytes,GreedyBytes} will
automatically perform the related hex-string-to-bytes conversion if
needed - and during printing we have osmocom.utils.JsonEncoder that
makes sure to convert any bytes type to a hex-string.

Change-Id: I9c77e420c314f5e74458628dc4e767eab6d97123

pySim/ts_31_103_shared.py

@@ -21,7 +21,7 @@ hence need to be in a separate python module to avoid circular dependencies.
 
 from construct import Struct, Switch, GreedyString, Int8ub, Prefixed, Enum, Byte
 from osmocom.tlv import BER_TLV_IE, TLV_IE_Collection
-from osmocom.construct import Bytes, HexAdapter, Utf8Adapter, GreedyBytes
+from osmocom.construct import Bytes, Utf8Adapter, GreedyBytes
 from pySim.filesystem import *
 
 # TS 31.103 Section 4.2.16
@@ -36,7 +36,7 @@ class EF_UICCIARI(LinFixedEF):
 # TS 31.103 Section 4.2.18
 class EF_IMSConfigData(BerTlvEF):
     class ImsConfigDataEncoding(BER_TLV_IE, tag=0x80):
-        _construct = HexAdapter(Bytes(1))
+        _construct = Bytes(1)
     class ImsConfigData(BER_TLV_IE, tag=0x81):
         _construct = GreedyString
     # pylint: disable=undefined-variable
@@ -103,7 +103,7 @@ class EF_WebRTCURI(LinFixedEF):
 # TS 31.103 Section 4.2.21
 class EF_MuDMiDConfigData(BerTlvEF):
     class MudMidConfigDataEncoding(BER_TLV_IE, tag=0x80):
-        _construct = HexAdapter(Bytes(1))
+        _construct = Bytes(1)
     class MudMidConfigData(BER_TLV_IE, tag=0x81):
         _construct = GreedyString
     # pylint: disable=undefined-variable