Audio: Remove hrtfs() test case from ContextTest.

This test is entirely dependent on user settings and would fail if hrtfs
were disabled on the testing machines OpenAL installation.

Signed-off-by: Squareys <Squareys@googlemail.com>

src/Magnum/Audio/Test/ContextTest.cpp

@@ -46,8 +46,7 @@ struct ContextTest: TestSuite::Tester {
 ContextTest::ContextTest() {
     addTests({&ContextTest::extensionsString,
               &ContextTest::isExtensionEnabled,
-              &ContextTest::hrtfStatus,
-              &ContextTest::hrtfs});
+              &ContextTest::hrtfStatus});
 }
 
 void ContextTest::extensionsString() {
@@ -66,12 +65,6 @@ void ContextTest::hrtfStatus() {
     CORRADE_COMPARE(out.str(), "Audio::Context::HrtfStatus::Denied\n");
 }
 
-void ContextTest::hrtfs() {
-    /* At least test that the hrtf status is `Disabled` */
-    CORRADE_VERIFY(!_context.isHrtfEnabled());
-    CORRADE_COMPARE(_context.hrtfStatus(), Context::HrtfStatus::Disabled);
-}
-
 }}}
 
 CORRADE_TEST_MAIN(Magnum::Audio::Test::ContextTest)