Remove Edge Agent's dependency on service SDK (#7385)

This change removes dead code that was orphaned by #6452. Doing so also allows us to remove Edge Agent's dependency on the IoT Hub service SDK.

To test, I ran the Build Images pipeline to generate new Docker images, then ran end-to-end and connectivity pipelines, including their nested variants, and confirmed that everything passes.

## Azure IoT Edge PR checklist:

edge-agent/src/Microsoft.Azure.Devices.Edge.Agent.Diagnostics/packages.lock.json

@@ -216,19 +216,6 @@
         "resolved": "2.5.12",
         "contentHash": "0SlEl+TSQdpjXWf9/37dXWAa0zk6R1EJKmGtGZeKUAH7WEQpJOWMxJ9I43igcBCnTkFwa28CdPnpSCjFZVQlkw=="
       },
-      "Microsoft.Azure.Devices": {
-        "type": "Transitive",
-        "resolved": "1.31.6",
-        "contentHash": "/skCDrkfdyiWsJc9Lbm3nrkHZVboFCxzpd4RaLYrx1t59qfBDAydGQYDY/sKEKFXy1Kpttk9MFN7Qy91LSEISQ==",
-        "dependencies": {
-          "Microsoft.Azure.Amqp": "2.5.12",
-          "Microsoft.Azure.Devices.Shared": "1.27.2",
-          "Microsoft.Rest.ClientRuntime": "2.3.21",
-          "Newtonsoft.Json": "12.0.3",
-          "System.Diagnostics.Contracts": "4.3.0",
-          "System.Diagnostics.TraceSource": "4.3.0"
-        }
-      },
       "Microsoft.Azure.Devices.Shared": {
         "type": "Transitive",
         "resolved": "1.27.2",
@@ -323,14 +310,6 @@
         "resolved": "1.1.3",
         "contentHash": "3Wrmi0kJDzClwAC+iBdUBpEKmEle8FQNsCs77fkiOIw/9oYA07bL1EZNX0kQ2OMN3xpwvl0vAtOCYY3ndDNlhQ=="
       },
-      "Microsoft.Rest.ClientRuntime": {
-        "type": "Transitive",
-        "resolved": "2.3.21",
-        "contentHash": "KDYlgTyO693V6pi6SGk9eg+dDvKjuOgmkapbHdpnB1SmTPKpvWxVLIMyARJsCFLfB6axyURUJHOfvxBQ0yJKeg==",
-        "dependencies": {
-          "Newtonsoft.Json": "10.0.3"
-        }
-      },
       "Microsoft.Win32.Primitives": {
         "type": "Transitive",
         "resolved": "4.3.0",
@@ -740,14 +719,6 @@
           "System.Text.Encoding": "4.3.0"
         }
       },
-      "System.Diagnostics.Contracts": {
-        "type": "Transitive",
-        "resolved": "4.3.0",
-        "contentHash": "eelRRbnm+OloiQvp9CXS0ixjNQldjjkHO4iIkR5XH2VIP8sUB/SIpa1TdUW6/+HDcQ+MlhP3pNa1u5SbzYuWGA==",
-        "dependencies": {
-          "System.Runtime": "4.3.0"
-        }
-      },
       "System.Diagnostics.Debug": {
         "type": "Transitive",
         "resolved": "4.3.0",
@@ -776,22 +747,6 @@
           "System.Runtime": "4.1.0"
         }
       },
-      "System.Diagnostics.TraceSource": {
-        "type": "Transitive",
-        "resolved": "4.3.0",
-        "contentHash": "VnYp1NxGx8Ww731y2LJ1vpfb/DKVNKEZ8Jsh5SgQTZREL/YpWRArgh9pI8CDLmgHspZmLL697CaLvH85qQpRiw==",
-        "dependencies": {
-          "Microsoft.NETCore.Platforms": "1.1.0",
-          "System.Collections": "4.3.0",
-          "System.Diagnostics.Debug": "4.3.0",
-          "System.Globalization": "4.3.0",
-          "System.Resources.ResourceManager": "4.3.0",
-          "System.Runtime": "4.3.0",
-          "System.Runtime.Extensions": "4.3.0",
-          "System.Threading": "4.3.0",
-          "runtime.native.System": "4.3.0"
-        }
-      },
       "System.Diagnostics.Tracing": {
         "type": "Transitive",
         "resolved": "4.3.0",
@@ -1631,7 +1586,6 @@
         "type": "Project",
         "dependencies": {
           "Azure.Storage.Blobs": "[12.19.1, )",
-          "Microsoft.Azure.Devices": "[1.31.6, )",
           "Microsoft.Azure.Devices.Client": "[1.36.10, )",
           "Microsoft.Azure.Devices.Edge.Agent.Core": "[1.0.0, )",
           "Microsoft.Azure.Devices.Edge.Util": "[1.0.0, )"

edge-agent/src/Microsoft.Azure.Devices.Edge.Agent.IoTHub/Microsoft.Azure.Devices.Edge.Agent.IoTHub.csproj

@@ -9,7 +9,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Azure.Devices" Version="1.31.6" />
     <PackageReference Include="Microsoft.Azure.Devices.Client" Version="1.36.10" />
     <PackageReference Include="Azure.Storage.Blobs" Version="12.19.1" />
   </ItemGroup>