Add //third_party/sqlite to dirs_to_snapshot, remove net_sql.patch

third_party/sqlite/src/test/vtab6.test

Index: third_party/sqlite/src/test/vtab6.test
diff --git a/third_party/sqlite/src/test/vtab6.test b/third_party/sqlite/src/test/vtab6.test
index 96e45bf5463dbb2b453bb804f0546e09bd6a9918..10bf286ab0f15f1b91d0929ff2f928b477ea63e3 100644
--- a/third_party/sqlite/src/test/vtab6.test
+++ b/third_party/sqlite/src/test/vtab6.test
@@ -561,12 +561,12 @@ do_test vtab6-11.4.1 {
   catchsql {
     SELECT a, b, c FROM ab NATURAL JOIN bc;
   }
-} {1 {table bc: xBestIndex returned an invalid plan}}
+} {1 {table ab: xBestIndex returned an invalid plan}}
 do_test vtab6-11.4.2 {
   catchsql {
     SELECT a, b, c FROM bc NATURAL JOIN ab;
   }
-} {1 {table ab: xBestIndex returned an invalid plan}}
+} {1 {table bc: xBestIndex returned an invalid plan}}
 
 unset ::echo_module_ignore_usable