pgAdmin 4 commit: Remove additional "SETOF" included when generating CR

Remove additional "SETOF" included when generating CREATE scripts for trigger functions. Fixes #4362

Branch
------
electron2

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=ac7b71281a4aa33c7f9e61dcec014bee77a6c435

Modified Files
--------------
docs/en_US/release_notes_4_9.rst                                       | 1 +
.../functions/templates/trigger_functions/pg/sql/11_plus/create.sql    | 3 ++-
.../functions/templates/trigger_functions/pg/sql/9.2_plus/create.sql   | 3 ++-
.../functions/templates/trigger_functions/pg/sql/9.5_plus/create.sql   | 3 ++-
.../functions/templates/trigger_functions/pg/sql/default/create.sql    | 3 ++-
.../functions/templates/trigger_functions/ppas/sql/9.2_plus/create.sql | 3 ++-
.../functions/templates/trigger_functions/ppas/sql/9.5_plus/create.sql | 3 ++-
.../functions/templates/trigger_functions/ppas/sql/default/create.sql  | 3 ++-
8 files changed, 15 insertions(+), 7 deletions(-)