Fix SQLite SQL queries.

Some copy-paste errors made their way to those queries and prevented usage
of pgloader, but I missed that because I was using a previous version of the
query text files in my interactive environment.

Also, SQLite doesn't like the queries finishing with a semi-colon, so remove
them.

Fixes #747.

src/sources/sqlite/sql/find-sequence.sql

@@ -1,4 +1 @@
--- params: table-name
-select seq
-  from sqlite_sequence
- where name = '~a';
+select seq from sqlite_sequence where name = '~a'

src/sources/sqlite/sql/list-tables.sql

@@ -3,4 +3,4 @@ SELECT tbl_name
  WHERE type='table'
        AND tbl_name <> 'sqlite_sequence'
        ~:[~*~;AND (~{~a~^~&~10t or ~})~]
-       ~:[~*~;AND (~{~a~^~&~10t and ~})~]"
+       ~:[~*~;AND (~{~a~^~&~10t and ~})~]