FBX -> Scene, part 2. Code changes, file renames (#1704)

* First pass FBX -> Scene File conversion.
This is the simple pass, minimizing code changes and focused on comments.

Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>

* Step 1 of part 2 of the FBX -> Scene rename

Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>

* Renaming FbxSceneBuilder folder to SceneBuilder

Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>

* Renamed files

Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>

* More FBX -> Scene

Signed-off-by: stankowi <4838196+AMZN-stankowi@users.noreply.github.com>

Code/Tools/SceneAPI/SDKWrapper/SceneWrapper.cpp

@@ -12,15 +12,8 @@ namespace AZ
    {
       const char* SceneWrapperBase::s_defaultSceneName = "myScene";
 
-      SceneWrapperBase::SceneWrapperBase(fbxsdk::FbxScene* fbxScene)
-          :m_fbxScene(fbxScene)
-          , m_assImpScene(nullptr)
-      {
-      }
-
       SceneWrapperBase::SceneWrapperBase(aiScene* aiScene)
-          :m_fbxScene(nullptr)
-          , m_assImpScene(aiScene)
+          : m_assImpScene(aiScene)
       {
       }
 
@@ -47,11 +40,6 @@ namespace AZ
       {
       }
 
-      fbxsdk::FbxScene* SceneWrapperBase::GetFbxScene() const
-      {
-          return m_fbxScene;
-      }
-
       const aiScene* SceneWrapperBase::GetAssImpScene() const
       {
           return m_assImpScene;