Remove unused SfxObjectShell_Impl::bIsTmp

Change-Id: I4040d4758a3753c2177aa2a7d3dba6c85b089b25

sfx2/source/doc/objxtor.cxx

@@ -223,7 +223,6 @@ SfxObjectShell_Impl::SfxObjectShell_Impl( SfxObjectShell& _rDocShell )
     ,bClosing( sal_False)
     ,bIsSaving( sal_False)
     ,bPasswd( sal_False)
-    ,bIsTmp( sal_False)
     ,bIsNamedVisible( sal_False)
     ,bIsTemplate(sal_False)
     ,bIsAbortingImport ( sal_False)

sfx2/source/inc/objshimp.hxx

@@ -71,7 +71,6 @@ struct SfxObjectShell_Impl : public ::sfx2::IMacroDocumentAccess
                         bClosing:1,         // sal_True while Close(), to prevent recurrences Notification
                         bIsSaving:1,
                         bPasswd:1,
-                        bIsTmp:1,
                         bIsNamedVisible:1,
                         bIsTemplate:1,
                         bIsAbortingImport:1,  // Import operation should be canceled.