[FIR] Remove the TODO from ConeTypeCompatibilityChecker

Ignore, because `@JvmDefault` is deprecated
and we don’t even have tests for it, and
the new
``@JvmDefaultWith[out]Compatibility` only
allow classes as their targets

compiler/fir/checkers/checkers.jvm/src/org/jetbrains/kotlin/fir/analysis/jvm/checkers/FirJvmAnnotationHelper.kt

@@ -17,7 +17,6 @@ fun <D> FirBasedSymbol<out D>.isCompiledToJvmDefault(
     session: FirSession,
     jvmDefaultMode: JvmDefaultMode?
 ): Boolean where D : FirAnnotationContainer, D : FirDeclaration {
-    // TODO: Fix support for all cases
     if (getAnnotationByClassId(StandardClassIds.Annotations.JvmDefault, session) != null) return true
 
     // jvmDefaultMode is null only on common metadata compilation