[FIX] account_tax_balance: Remove unnecessary text from button

In previous versions, string was converted to button title and wasn't displayed
Now it was being shown, so this converts it back to the button title

TT29027

account_tax_balance/views/account_tax_view.xml

@@ -15,42 +15,42 @@
                 <button
                     type="object"
                     name="view_tax_regular_lines"
-                    string="View tax regular lines"
+                    title="View tax regular lines"
                     icon="fa-search-plus"
                 />
                 <field name="base_balance_regular" sum="Base Total" />
                 <button
                     type="object"
                     name="view_base_regular_lines"
-                    string="View base regular lines"
+                    title="View base regular lines"
                     icon="fa-search-plus"
                 />
                 <field name="balance_refund" sum="Total" />
                 <button
                     type="object"
                     name="view_tax_refund_lines"
-                    string="View tax refund lines"
+                    title="View tax refund lines"
                     icon="fa-search-plus"
                 />
                 <field name="base_balance_refund" sum="Base Total" />
                 <button
                     type="object"
                     name="view_base_refund_lines"
-                    string="View base refund lines"
+                    title="View base refund lines"
                     icon="fa-search-plus"
                 />
                 <field name="balance" sum="Total" />
                 <button
                     type="object"
                     name="view_tax_lines"
-                    string="View tax lines"
+                    title="View tax lines"
                     icon="fa-search-plus"
                 />
                 <field name="base_balance" sum="Base Total" />
                 <button
                     type="object"
                     name="view_base_lines"
-                    string="View base lines"
+                    title="View base lines"
                     icon="fa-search-plus"
                 />
             </tree>