Remove OS/process info gathering in CoreCLR

This change temporarily removes the OS and process information gathering
from the CoreCLR version of PowerShell Editor Services because they cause
assembly loading errors.  This should be resolved by the upcoming conversion
to the dotnet cli tools.

Future resolution tracked by #278.

Author: daviwil

src/PowerShellEditorServices.Host/EditorServicesHost.cs

@@ -96,11 +96,20 @@ public void StartLogging(string logFilePath, LogLevel logLevel)
         {
             Logger.Initialize(logFilePath, logLevel);
 
-            FileVersionInfo fileVersionInfo =
 #if NanoServer
+            FileVersionInfo fileVersionInfo =
                 FileVersionInfo.GetVersionInfo(this.GetType().GetTypeInfo().Assembly.Location);
+
+            // TODO #278: Need the correct dependency package for this to work correctly
+            //string osVersionString = RuntimeInformation.OSDescription;
+            //string processArchitecture = RuntimeInformation.ProcessArchitecture == Architecture.X64 ? "64-bit" : "32-bit";
+            //string osArchitecture = RuntimeInformation.OSArchitecture == Architecture.X64 ? "64-bit" : "32-bit";
 #else
+            FileVersionInfo fileVersionInfo =
                 FileVersionInfo.GetVersionInfo(this.GetType().Assembly.Location);
+            string osVersionString = Environment.OSVersion.VersionString;
+            string processArchitecture = Environment.Is64BitProcess ? "64-bit" : "32-bit";
+            string osArchitecture = Environment.Is64BitOperatingSystem ? "64-bit" : "32-bit";
 #endif
 
             string newLine = Environment.NewLine;
@@ -113,12 +122,14 @@ public void StartLogging(string logFilePath, LogLevel logLevel)
                     $"    Name:      {this.hostDetails.Name}" + newLine +
                     $"    ProfileId: {this.hostDetails.ProfileId}" + newLine +
                     $"    Version:   {this.hostDetails.Version}" + newLine +
-                     "    Arch:      {0}" + newLine + newLine +
+#if !NanoServer
+                    $"    Arch:      {processArchitecture}" + newLine + newLine +
                      "  Operating system details:" + newLine + newLine +
-                    $"    Version: {Environment.OSVersion.VersionString}" + newLine +
-                     "    Arch:    {1}",
-                    Environment.Is64BitProcess ? "64-bit" : "32-bit",
-                    Environment.Is64BitOperatingSystem ? "64-bit" : "32-bit"));
+                    $"    Version: {osVersionString}" + newLine +
+                    $"    Arch:    {osArchitecture}"));
+#else
+                    ""));
+#endif
         }
 
         /// <summary>