Remove failing-lto-tests.txt

Author: antoyo

.github/workflows/release.yml

@@ -72,9 +72,6 @@ jobs:
         git config --global user.name "User"
         ./y.sh prepare
 
-    - name: Add more failing tests because of undefined symbol errors (FIXME)
-      run: cat tests/failing-lto-tests.txt >> tests/failing-ui-tests.txt
-
     - name: Run tests
       run: |
         # FIXME(antoyo): we cannot enable LTO for stdarch tests currently because of some failing LTO tests using proc-macros.