Disable effpi

It fails with variance errors after the soundness hole was plugged.
It would be best of the authors could take a look to see how to fix this.

Author: odersky

community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala

@@ -372,7 +372,7 @@ class CommunityBuildTest:
   @Test def stdLib213 = projects.stdLib213.run()
   @Test def shapeless = projects.shapeless.run()
   @Test def xmlInterpolator = projects.xmlInterpolator.run()
-  @Test def effpi = projects.effpi.run()
+  // @Test def effpi = projects.effpi.run() // disabled since it fails with variance errors after soundness hole was fixed
   @Test def sconfig = projects.sconfig.run()
   @Test def zio = projects.zio.run()
   @Test def munit = projects.munit.run()