Remove unnecessary self requirements

Author: liufengyun

library/src/scala/quoted/internal/QuoteMatching.scala

@@ -3,7 +3,7 @@ package scala.quoted.internal
 import scala.quoted.{QuoteContext, Expr, Type}
 
 /** Part of the QuoteContext interface that needs to be implemented by the compiler but is not visible to users */
-trait QuoteMatching { self: QuoteContext & QuoteUnpickler =>
+trait QuoteMatching {
 
   val ExprMatch: ExprMatchModule
 

library/src/scala/quoted/internal/QuoteUnpickler.scala

@@ -3,7 +3,7 @@ package scala.quoted.internal
 import scala.quoted.{QuoteContext, Expr, Type}
 
 /** Part of the QuoteContext interface that needs to be implemented by the compiler but is not visible to users */
-trait QuoteUnpickler { self: QuoteContext & QuoteMatching =>
+trait QuoteUnpickler {
 
   /** Unpickle `repr` which represents a pickled `Expr` tree,
    *  replacing splice nodes with `holes`