Do not report missing collating functions while parsing the schema.
Also remove a stray comment.

FossilOrigin-Name: e313edca0472f07e9b872b92120d80b4bc177328
diff --git a/src/expr.c b/src/expr.c
index ce6e295..0e4a3cb 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -112,7 +112,12 @@
       continue;
     }
     if( op==TK_COLLATE ){
-      pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken);
+      if( db->init.busy ){
+        /* Do not report errors when parsing while the schema */
+        pColl = sqlite3FindCollSeq(db, ENC(db), p->u.zToken, 0);
+      }else{
+        pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken);
+      }
       break;
     }
     if( p->pTab!=0