Minor. Moved test data to subdirectory.

idea/testData/codeInsight/lineMarker/overrideImplement/FakeOverrideFun.kt

@@ -0,0 +1,11 @@
+trait <lineMarker></lineMarker>A {
+  fun <lineMarker></lineMarker>f() {}
+}
+
+trait <lineMarker></lineMarker>B : A
+
+trait <lineMarker></lineMarker>C : B, A
+
+class SomeClass() : C {
+  override fun <lineMarker descr="Overrides function in 'A'"></lineMarker>f() {}
+}