Cleanup python deephaven package dependencies

engine/table/python/core/deephaven_jpy_init.py

@@ -1,10 +1,5 @@
 #!/usr/bin/python
 
-# DO NOT DELETE THESE IMPORTS:
-# dill and base64 are required for our PickledResult to function properly
-import dill
-import base64
-
 import jpy
 import os
 

engine/table/src/main/java/io/deephaven/engine/util/PickledResult.java

@@ -8,6 +8,7 @@
 /**
  * Pickled result for a Python fetch.
  */
+@Deprecated
 public class PickledResult implements Serializable {
     private String pickled;
     private String pythonVersion; // version of python used to perform pickle

engine/table/src/test/java/io/deephaven/engine/util/WorkerPythonEnvironment.java

@@ -24,6 +24,7 @@
  * remote Python session should execute queries which interact wtih this class. The script sessions that run for
  * PersistentQueries or consoles are handled separately by the {@link PythonDeephavenSession}.
  */
+@Deprecated
 public enum WorkerPythonEnvironment {
     DEFAULT;
 

py/server/setup.py

@@ -46,11 +46,8 @@ def normalize_version(version):
       install_requires=['deephaven-jpy=={}'.format(__normalized_version__),
                         'deephaven-plugin',
                         'numpy',
-                        'dill>=0.2.8',
-                        'wrapt',
                         'pandas',
-                        'numba;python_version>"3.0"',
-                        'enum34;python_version<"3.4"'
+                        'numba'
                         ],
       entry_points={
           'deephaven.plugin': ['registration_cls = deephaven.pandasplugin:PandasPluginRegistration']