Disable from tasty tests that fail on CI

Author: nicolasstucki

compiler/test/dotty/tools/dotc/FromTastyTests.scala

@@ -46,6 +46,8 @@ class FromTastyTests extends ParallelTesting {
         "i3000.scala",
         "t1203a.scala",
         "t2260.scala",
+        "t4579.scala",
+        "tcpoly_ticket2096.scala",
         "i2345.scala",
         "t4731.scala",
         "spec-super.scala",