removes custom json parsing (#11)

isd.i

@@ -11,29 +11,4 @@
 
 %include <std_string.i>
 
-%pythoncode %{
-    import json    
-%}
-
-%include "Isd.h"
-%extend csm::Isd {
-    %pythoncode %{
-        import json
-        import numpy as np
-        @classmethod
-        def loads(cls, stream):
-            isd = cls()
-            if not isinstance(stream, dict):
-                stream = json.loads(stream)
-            for k, v in stream.items():
-                if isinstance(v, list):
-                    for i in v:
-                        isd.addParam(k, str(i))
-                isd.addParam(k, str(v))
-            return isd
-
-        @classmethod
-        def load(cls, fp):
-            return cls.loads(fp.read())
-    %}
-}
\ No newline at end of file
+%include "Isd.h"
\ No newline at end of file

usgs.i

-%module(package="csmapi") usgs
-%{
-    #include "UsgsAstroLsPlugin.h"
-%}
-
-%import "UsgsAstroLsPlugin.h"
\ No newline at end of file