Remove an unnecessary decision.

FossilOrigin-Name: adcb4665490404e8da2de128dd5df9aeed8e08893649dedb6788ebb5d957b400
diff --git a/src/expr.c b/src/expr.c
index fae2c11..e195976 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -1809,7 +1809,7 @@
     case TK_ID:
       /* Convert "true" or "false" in a DEFAULT clause into the
       ** appropriate TK_TRUEFALSE operator */
-      if( pWalker->eCode>=4 && sqlite3ExprIdToTrueFalse(pExpr) ){
+      if( sqlite3ExprIdToTrueFalse(pExpr) ){
         return WRC_Prune;
       }
       /* Fall thru */