Remove debris from smart send experiment (#24957)

This should've been part of
#23067

Removing debris, making package.json look cleaner. 
/cc @cwebster-99

Author: anthonykim1

package.json

@@ -448,17 +448,15 @@
                             "pythonPromptNewToolsExt",
                             "pythonTerminalEnvVarActivation",
                             "pythonDiscoveryUsingWorkers",
-                            "pythonTestAdapter",
-                            "pythonREPLSmartSend"
+                            "pythonTestAdapter"
                         ],
                         "enumDescriptions": [
                             "%python.experiments.All.description%",
                             "%python.experiments.pythonSurveyNotification.description%",
                             "%python.experiments.pythonPromptNewToolsExt.description%",
                             "%python.experiments.pythonTerminalEnvVarActivation.description%",
                             "%python.experiments.pythonDiscoveryUsingWorkers.description%",
-                            "%python.experiments.pythonTestAdapter.description%",
-                            "%python.experiments.pythonREPLSmartSend.description%"
+                            "%python.experiments.pythonTestAdapter.description%"
                         ]
                     },
                     "scope": "window",
@@ -475,17 +473,15 @@
                             "pythonPromptNewToolsExt",
                             "pythonTerminalEnvVarActivation",
                             "pythonDiscoveryUsingWorkers",
-                            "pythonTestAdapter",
-                            "pythonREPLSmartSend"
+                            "pythonTestAdapter"
                         ],
                         "enumDescriptions": [
                             "%python.experiments.All.description%",
                             "%python.experiments.pythonSurveyNotification.description%",
                             "%python.experiments.pythonPromptNewToolsExt.description%",
                             "%python.experiments.pythonTerminalEnvVarActivation.description%",
                             "%python.experiments.pythonDiscoveryUsingWorkers.description%",
-                            "%python.experiments.pythonTestAdapter.description%",
-                            "%python.experiments.pythonREPLSmartSend.description%"
+                            "%python.experiments.pythonTestAdapter.description%"
                         ]
                     },
                     "scope": "window",

package.nls.json

@@ -42,7 +42,6 @@
     "python.experiments.pythonTerminalEnvVarActivation.description": "Enables use of environment variables to activate terminals instead of sending activation commands.",
     "python.experiments.pythonDiscoveryUsingWorkers.description": "Enables use of worker threads to do heavy computation when discovering interpreters.",
     "python.experiments.pythonTestAdapter.description": "Denotes the Python Test Adapter experiment.",
-    "python.experiments.pythonREPLSmartSend.description": "Denotes the Python REPL Smart Send experiment.",
     "python.experiments.pythonRecommendTensorboardExt.description": "Denotes the Tensorboard Extension recommendation experiment.",
     "python.globalModuleInstallation.description": "Whether to install Python modules globally when not using an environment.",
     "python.languageServer.description": "Defines type of the language server.",