Cleanup --from-tasty blacklists

compiler/test/dotc/pos-from-tasty.blacklist

@@ -1,26 +1,5 @@
-# Wrong number of arguments (only on bootstrapped)
-i3130b.scala
-
-# Missing position
+# has location not matching its contents: contains class mixins.Collections
 collections_1.scala
 
-# MatchError in SymDenotation.sourceModule on a ThisType
+# Infinite loop
 t3612.scala
-
-# Fails on MacOS
-annot-bootstrap.scala
-
-# ScalaRunTime cannot be unpickled because it is already loaded
-repeatedArgs213.scala
-
-# Error printing parent constructors that are blocks
-default-super.scala
-
-# Did not survive addition of type ascriptions in decompiled tests
-i3050.scala
-i4006b.scala
-i4006c.scala
-
-# Not sure what's wring here
-i4203.scala
-t6278-synth-def.scala

compiler/test/dotc/run-from-tasty.blacklist

@@ -1,8 +1,5 @@
 # Closure type miss match
 eff-dependent.scala
 
-# It seems we still harmonize types in fromTasty. Not sure where this happens
-puzzle.scala
-
 # We get: class Foo needs to be abstract, since implicit val x$1: TC is not defined
 i2567.scala

compiler/test/dotty/tools/TestSources.scala

@@ -43,7 +43,9 @@ object TestSources {
       .filter(_.nonEmpty)
       .toList
 
-    assert(list.nonEmpty)
+    if (list.isEmpty)
+      println(s"$path is empty")
+
     list
   }