ProcessWatcher fixes. (#6570)

* ProcessWatcher fixes.

Signed-off-by: bosnichd <bosnichd@amazon.com>

* Update based on review feedback.

Signed-off-by: bosnichd <bosnichd@amazon.com>

Code/Framework/AzFramework/AzFramework/azframework_files.cmake

@@ -270,8 +270,6 @@ set(FILES
     Physics/WindBus.h
     Process/ProcessCommunicator.cpp
     Process/ProcessCommunicator.h
-    Process/ProcessWatcher.cpp
-    Process/ProcessWatcher.h
     Process/ProcessCommon_fwd.h
     Process/ProcessCommunicator.h
     Process/ProcessWatcher.cpp

Code/Framework/AzFramework/Platform/Common/Default/AzFramework/Process/ProcessWatcher_Default.cpp

@@ -83,4 +83,9 @@ namespace AzFramework
     {
 
     }
+
+    AZStd::string ProcessLauncher::ProcessLaunchInfo::GetCommandLineParametersAsString() const
+    {
+        return AZStd::string{};
+    }
 } //namespace AzFramework