Don't need to call atPhase here

Author: Duhemm

compiler/src/dotty/tools/backend/jvm/DottyBackendInterface.scala

@@ -557,11 +557,7 @@ class DottyBackendInterface(outputDirectory: AbstractFile, val superCallsMap: Ma
       if (erasedTypeSym.isPrimitiveValueClass) {
         None
       } else {
-        val jsOpt =
-          ctx.atPhase(ctx.erasurePhase) { implicit ctx =>
-            Erasure.javaSig(sym, memberTpe, _ => ())
-          }
-
+        val jsOpt = Erasure.javaSig(sym, memberTpe, _ => ())
         if (ctx.settings.XverifySignatures.value) {
           jsOpt.foreach(verifySignature(sym, _))
         }