test: Don't flag testsurround as suitable for non-interactive use

According to #8088 it has no value as an automated test, and by
default it takes long enough to hit the default test timeout.

Resolves: #8088
Signed-off-by: Simon McVittie <smcv@collabora.com>

test/CMakeLists.txt

@@ -279,7 +279,6 @@ endif()
 
 if(SDL_DUMMYAUDIO)
     set_property(TARGET testaudioinfo PROPERTY SDL_NONINTERACTIVE 1)
-    set_property(TARGET testsurround PROPERTY SDL_NONINTERACTIVE 1)
 endif()
 
 if(SDL_DUMMYVIDEO)