Disable a couple of tests

Comment out tests that check cartodb_id text columns. These are no
longer taken into consideration as candidate primary ID (candidate
columns should be numeric).

test/CDB_CartodbfyTableTest_expect

@@ -28,14 +28,6 @@ trigger-protected the_geom cartodbfied fine
 extent|BOX(1 1,2 2)
 DROP TABLE
 SELECT 1
-text cartodb_id cartodbfied fine
-5
-DROP TABLE
-SELECT 1
-uncasting text cartodb_id cartodbfied fine
-1|nan
-DROP TABLE
-SELECT 1
 unsequenced cartodb_id cartodbfied fine
 1
 DROP TABLE