Removes imports deprecated in Python3 (pythonnet#925)

Author: Cronan

CHANGELOG.md

@@ -15,6 +15,7 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
 
 -   Added argument types information to "No method matches given arguments" message
 -   Moved wheel import in setup.py inside of a try/except to prevent pip collection failures
+-   Removes PyLong_GetMax and PyClass_New when targetting Python3
 
 ### Fixed
 

src/runtime/runtime.cs

@@ -769,8 +769,10 @@ public static extern int Py_Main(
         [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
         internal static extern IntPtr PyCFunction_Call(IntPtr func, IntPtr args, IntPtr kw);
 
+#if PYTHON2
         [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
         internal static extern IntPtr PyClass_New(IntPtr bases, IntPtr dict, IntPtr name);
+#endif
 
         [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
         internal static extern IntPtr PyInstance_New(IntPtr cls, IntPtr args, IntPtr kw);
@@ -1012,10 +1014,6 @@ internal static IntPtr PyInt_FromInt64(long value)
         [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
             EntryPoint = "PyLong_FromString")]
         internal static extern IntPtr PyInt_FromString(string value, IntPtr end, int radix);
-
-        [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
-            EntryPoint = "PyLong_GetMax")]
-        internal static extern int PyInt_GetMax();
 #elif PYTHON2
         [DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
         private static extern IntPtr PyInt_FromLong(IntPtr value);