[Spec tests] Remove spec info from fir tests

compiler/tests-spec/testData/diagnostics/notLinked/dfa/pos/29.fir.kt

@@ -2,15 +2,6 @@
 // !DIAGNOSTICS: -UNUSED_EXPRESSION
 // SKIP_TXT
 
-/*
- * KOTLIN DIAGNOSTICS NOT LINKED SPEC TEST (POSITIVE)
- *
- * SECTIONS: dfa
- * NUMBER: 29
- * DESCRIPTION: Raw data flow analysis test
- * HELPERS: classes, properties, objects, typealiases, enumClasses, interfaces, sealedClasses
- */
-
 // TESTCASE NUMBER: 1
 fun case_1(x: Class?) {
     if (x?.prop_8?.prop_8?.prop_8?.prop_8 != null) {