Revert "Use SVT_LOG=0 in avifsvttest for SVT-AV1 3.0.0 (#2668)"

This reverts commit c28263c91fd5f4f7a10ba7322b457b0b9fa97324.

tests/CMakeLists.txt

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 3ab3689..3c9892c 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -154,8 +154,6 @@
 
     if(AVIF_CODEC_SVT_ENABLED)
         add_avif_internal_gtest(avifsvttest)
-        # TODO: https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2251 - Remove when fixed upstream
-        set_property(TEST avifsvttest PROPERTY ENVIRONMENT "SVT_LOG=0")
     endif()
 
     add_avif_internal_gtest(aviftilingtest)