Remove test for `inline class`
This test is obsolete and is now problematic because it seems to fail under some circumstances.
diff --git a/test/whitespace/classes.unit b/test/whitespace/classes.unit
index d1b6d44..8702c18 100644
--- a/test/whitespace/classes.unit
+++ b/test/whitespace/classes.unit
@@ -243,8 +243,4 @@
abstract mixin class C12 = Object
with Mixin;
abstract base mixin class C13 = Object
- with Mixin;
->>> inline classes
-inline class C {}
-<<<
-inline class C {}
\ No newline at end of file
+ with Mixin;
\ No newline at end of file
