diff --git a/authorization-codegen/protoc-gen-dh-auth-wiring b/authorization-codegen/protoc-gen-dh-auth-wiring
deleted file mode 100755
index bffc6e42731..00000000000
--- a/authorization-codegen/protoc-gen-dh-auth-wiring
+++ /dev/null
@@ -1,2 +0,0 @@
-# protoc-gen-service-auth-wiring
-java -cp "authorization-codegen/build/libs/deephaven-authorization-codegen-${DEEPHAVEN_VERSION}-all.jar" io.deephaven.auth.codegen.CombinedAuthWiring
diff --git a/authorization-codegen/src/main/java/io/deephaven/auth/codegen/CombinedAuthWiring.java b/authorization-codegen/src/main/java/io/deephaven/auth/codegen/CombinedAuthWiring.java
deleted file mode 100644
index e0b400dac1c..00000000000
--- a/authorization-codegen/src/main/java/io/deephaven/auth/codegen/CombinedAuthWiring.java
+++ /dev/null
@@ -1,89 +0,0 @@
-package io.deephaven.auth.codegen;
-
-import com.google.common.base.Strings;
-import com.google.protobuf.DescriptorProtos;
-import com.google.protobuf.compiler.PluginProtos;
-
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-public class CombinedAuthWiring {
-    public static void main(String[] args) throws IOException {
-        // First, initial setup to be shared by both plugin aspects
-        final PluginProtos.CodeGeneratorRequest request = PluginProtos.CodeGeneratorRequest.parseFrom(System.in);
-        final PluginProtos.CodeGeneratorResponse.Builder response = PluginProtos.CodeGeneratorResponse.newBuilder();
-
-        // tell protoc that we support proto3's optional as synthetic oneof feature
-        response.setSupportedFeatures(PluginProtos.CodeGeneratorResponse.Feature.FEATURE_PROTO3_OPTIONAL_VALUE);
-
-        // create a mapping from message type to java type name
-        final Map<String, String> typeMap = generateTypeMap(request);
-
-
-        // Next, for each service, generate the auth wiring
-        for (final DescriptorProtos.FileDescriptorProto file : request.getProtoFileList()) {
-            final String realPackage = getRealPackage(file);
-            for (final DescriptorProtos.ServiceDescriptorProto service : file.getServiceList()) {
-                if (service.getName().contains("TableService")) {
-                    // all table services perform an authorization check using contextual source tables
-                    continue;
-                } else if (service.getName().contains("BrowserFlightService")) {
-                    // the browser flight requests get converted to FlightService requests based on our binding
-                    continue;
-                }
-                GenerateServiceAuthWiring.generateForService(realPackage, response, service, typeMap);
-            }
-        }
-
-
-        // Then, for each service that needs contextual auth, create that interface too
-        for (final DescriptorProtos.FileDescriptorProto file : request.getProtoFileList()) {
-            for (final DescriptorProtos.ServiceDescriptorProto service : file.getServiceList()) {
-                // Only table services perform an authorization check using contextual source tables
-                // In other circumstances we would generate from .proto first, then compile this plugin, then
-                // run the plugin on the remaining .proto files, but we aren't generalizing the plugin that far
-                // at this time.
-                List<Long> contextualAuthValue = service.getOptions().getUnknownFields().getField(0x6E68).getVarintList();
-                boolean hasContextualAuth = !contextualAuthValue.isEmpty() && contextualAuthValue.get(0) == 1;
-                if (!hasContextualAuth) {
-                    continue;
-                }
-
-                GenerateContextualAuthWiring.generateForService(response, service, typeMap);
-            }
-        }
-
-        // Finally, write the combined output back to protoc
-        response.build().toByteString().writeTo(System.out);
-    }
-
-    public static Map<String, String> generateTypeMap(PluginProtos.CodeGeneratorRequest request) {
-        final Map<String, String> typeMap = new HashMap<>();
-        for (final DescriptorProtos.FileDescriptorProto file : request.getProtoFileList()) {
-            String realPackage = getRealPackage(file);
-            for (final DescriptorProtos.DescriptorProto message : file.getMessageTypeList()) {
-                typeMap.put("." + file.getPackage() + "." + message.getName(), realPackage + "." + message.getName());
-            }
-        }
-        return typeMap;
-    }
-
-    public static String getRealPackage(final DescriptorProtos.FileDescriptorProto file) {
-        String realPackage = null;
-        if (file.hasOptions()) {
-            realPackage = file.getOptions().getJavaPackage();
-        }
-        if (Strings.isNullOrEmpty(realPackage)) {
-            realPackage = file.getPackage();
-        }
-        // Unsure of where this is specified in Flight.proto, but in addition to the package the messages are
-        // put into a "Flight" namespace.
-        if (realPackage.equals("org.apache.arrow.flight.impl")) {
-            realPackage += ".Flight";
-        }
-        return realPackage;
-    }
-
-}
diff --git a/proto/proto-backplane-grpc/src/main/proto/deephaven/proto/contextual-auth.proto b/proto/proto-backplane-grpc/src/main/proto/deephaven/proto/contextual-auth.proto
deleted file mode 100644
index 18c1f9b18f5..00000000000
--- a/proto/proto-backplane-grpc/src/main/proto/deephaven/proto/contextual-auth.proto
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (c) 2016-2023 Deephaven Data Labs and Patent Pending
- */
-
-syntax = "proto3";
-
-package io.deephaven.proto.backplane.grpc;
-
-import "google/protobuf/descriptor.proto";
-
-option java_multiple_files = true;
-option optimize_for = SPEED;
-option go_package = "github.com/deephaven/deephaven-core/go/internal/proto";
-
-extend google.protobuf.ServiceOptions {
-  // Indicates that the service requires server-side contextual authorization checks.
-  // (Numeric value is 'dh', to avoid collisions with nice round generated numbers.)
-  bool contextual_auth = 0x6E68;
-}
\ No newline at end of file