Avoid locale dependency in expected output.

We'll have to settle for just listing the extensions' data types,
since function arguments seem to sort differently in different locales.
Per buildfarm results.

contrib/earthdistance/sql/earthdistance.sql

@@ -305,8 +305,6 @@ SELECT abs(cube_distance(ll_to_earth(-30,-90), '(0)'::cube) / earth() - 1) <
 
 -- list what's installed
 \dT
-\df
-\do
 
 drop extension cube;  -- fail, earthdistance requires it
 
@@ -316,8 +314,6 @@ drop type cube;  -- fail, extension cube requires it
 
 -- list what's installed
 \dT
-\df
-\do
 
 create table foo (f1 cube, f2 int);
 
@@ -341,8 +337,6 @@ create extension cube with schema c;
 \df public.*
 \do public.*
 \dT c.*
-\df c.*
-\do c.*
 
 create table foo (f1 c.cube, f2 int);