Remove useless options from partest runs

- Removed "-Xprint-types", it is only rarely needed and makes it very
hard to read trees, enable it yourself if you need it.
- Removed "-Ylog:<some", this does not seem to have any effect
currently.
- Removed "-pagewidth 90", this is overloaded in tests.scala to 160 anyway.

Author: smarter

test/dotty/partest/DPDirectCompiler.scala

@@ -15,9 +15,7 @@ class DPDirectCompiler(runner: DPTestRunner) extends nest.DirectCompiler(runner)
 
     implicit val ctx: dotty.tools.dotc.core.Contexts.Context = {
       val base = new dotty.tools.dotc.core.Contexts.ContextBase
-      import base.settings._
-      val ctx = base.initialCtx.fresh.setSetting(printtypes, true)
-        .setSetting(pageWidth, 90).setSetting(log, List("<some"))
+      val ctx = base.initialCtx.fresh
       base.definitions.init(ctx)
       ctx
     }