Undo changes of trailing space in recently-committed expected files.

This is mostly just over-compulsiveness on my part, but the exercise
did reveal one real bug: errors.out has a space difference now where
it should not.

src/test/regress/expected/prepare.out

@@ -148,19 +148,19 @@ PREPARE q7(unknown) AS
     SELECT * FROM road WHERE thepath = $1;
 SELECT name, statement, parameter_types FROM pg_prepared_statements
     ORDER BY name;
- name |                                                                                    statement                                                                                    |                    parameter_types                     
+ name |                            statement                             |                    parameter_types                     
 ------+------------------------------------------------------------------+--------------------------------------------------------
- q2   | PREPARE q2(text) AS                                              | {text}                                                
-      : \x09SELECT datname, datistemplate, datallowconn                                                                          
-      : \x09FROM pg_database WHERE datname = $1;                                                                                 
+ q2   | PREPARE q2(text) AS                                              | {text}
+      : \x09SELECT datname, datistemplate, datallowconn                    
+      : \x09FROM pg_database WHERE datname = $1;                           
  q3   | PREPARE q3(text, int, float, boolean, oid, smallint) AS          | {text,integer,"double precision",boolean,oid,smallint}
-      : \x09SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR                                                             
-      : \x09ten = $3::bigint OR true = $4 OR oid = $5 OR odd = $6::int);                                                         
- q5   | PREPARE q5(int, text) AS                                         | {integer,text}                                        
-      : \x09SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2;                                                             
- q6   | PREPARE q6 AS                                                    | {integer,name}                                        
-      :     SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2;                                                            
- q7   | PREPARE q7(unknown) AS                                           | {path}                                                
-      :     SELECT * FROM road WHERE thepath = $1;                                                                               
+      : \x09SELECT * FROM tenk1 WHERE string4 = $1 AND (four = $2 OR       
+      : \x09ten = $3::bigint OR true = $4 OR oid = $5 OR odd = $6::int);   
+ q5   | PREPARE q5(int, text) AS                                         | {integer,text}
+      : \x09SELECT * FROM tenk1 WHERE unique1 = $1 OR stringu1 = $2;       
+ q6   | PREPARE q6 AS                                                    | {integer,name}
+      :     SELECT * FROM tenk1 WHERE unique1 = $1 AND stringu1 = $2;      
+ q7   | PREPARE q7(unknown) AS                                           | {path}
+      :     SELECT * FROM road WHERE thepath = $1;                         
 (5 rows)