Revert "loplugin:constfields in scripting"

This reverts commit 383a4f883d.

Now that we know that making fields has negative side effects
like disabling assignment operator generation.

Change-Id: I9fc04024b12a977481d010950244cff05e18bd74
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/90368
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

scripting/source/stringresource/stringresource.cxx

@@ -1293,7 +1293,7 @@ namespace {
 
 class BinaryInput
 {
-    Sequence< sal_Int8 > const              m_aData;
+    Sequence< sal_Int8 >                    m_aData;
     Reference< XComponentContext >          m_xContext;
 
     const sal_Int8*                         m_pData;