Remove test on aborting distributed transaction that did CREATE TABLESPACE.

CREATE TABLESPACE isn't transactional. Rolling it back doesn't work
properly. This is a known limitation in PostgreSQL, we'll live with it.

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/pg_twophase/abort_create_tests/post_sql/expected/abort_create_tablespace_post.ans

-CREATE TABLESPACE abort_ts1 filespace LOCATION '/tmp/twophase_create_tablespace_test_ts';
-CREATE TABLESPACE
-create table ct_ts_test(a int, b int) tablespace abort_ts1;
-psql:/path/sql_file:1: NOTICE:  Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'a' as the Greenplum Database data distribution key for this table.
-HINT:  The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew.
-CREATE TABLE
-insert into ct_ts_test select i,i+1 from generate_series(1,1000)i;
-INSERT 0 1000
-drop table ct_ts_test;
-DROP TABLE
-DROP TABLESPACE abort_ts1;
-DROP TABLESPACE

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/pg_twophase/abort_create_tests/post_sql/sql/abort_create_tablespace_post.sql

-CREATE TABLESPACE abort_ts1 LOCATION '/tmp/twophase_create_tablespace_test_ts';
-create table ct_ts_test(a int, b int) tablespace abort_ts1;
-insert into ct_ts_test select i,i+1 from generate_series(1,1000)i;
-drop table ct_ts_test;
-DROP TABLESPACE abort_ts1;

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/pg_twophase/abort_create_tests/trigger_sql/sql/abort_create_tablespace_trigger.sql

-CREATE TABLESPACE abort_ts1 LOCATION '/tmp/twophase_create_tablespace_test_ts';
-