Fix a faulty assert() in the btree part of the "PRAGMA page_size = ?" code.

FossilOrigin-Name: 90b197489a37e01dcb2f3a8182848c1301e1757b

src/btree.c

@@ -2429,7 +2429,7 @@ int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
   if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE &&
         ((pageSize-1)&pageSize)==0 ){
     assert( (pageSize & 7)==0 );
-    assert( !pBt->pPage1 && !pBt->pCursor );
+    assert( !pBt->pCursor );
     pBt->pageSize = (u32)pageSize;
     freeTempSpace(pBt);
   }