pgsql: Remove dynamic translation of regression test scripts, step 2.

Remove dynamic translation of regression test scripts, step 2.

"git mv" all the input/*.source and output/*.source files into
the corresponding sql/ and expected/ directories.  Then remove
the pg_regress and Makefile infrastructure associated with
dynamic translation.

Discussion: https://postgr.es/m/1655733.1639871614@sss.pgh.pa.us

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/dc9c3b0ff21465fa89d71eecf5e6cc956d647eca

Modified Files
--------------
contrib/dblink/Makefile                            |   1 -
contrib/dblink/expected/.gitignore                 |   1 -
.../{output/paths.source => expected/paths.out}    |   0
contrib/dblink/sql/.gitignore                      |   1 -
.../dblink/{input/paths.source => sql/paths.sql}   |   0
contrib/file_fdw/Makefile                          |   2 -
contrib/file_fdw/expected/.gitignore               |   1 -
.../file_fdw.source => expected/file_fdw.out}      |   0
contrib/file_fdw/sql/.gitignore                    |   1 -
.../{input/file_fdw.source => sql/file_fdw.sql}    |   0
src/interfaces/ecpg/test/pg_regress_ecpg.c         |   7 +-
src/pl/plpgsql/src/Makefile                        |   6 -
src/pl/plpgsql/src/expected/.gitignore             |   1 -
.../plpgsql_copy.out}                              |   0
src/pl/plpgsql/src/sql/.gitignore                  |   1 -
.../plpgsql_copy.source => sql/plpgsql_copy.sql}   |   0
src/test/regress/GNUmakefile                       |  12 +-
src/test/regress/expected/.gitignore               |  10 --
.../constraints.out}                               |   0
.../{output/copy.source => expected/copy.out}      |   0
.../create_function_0.out}                         |   0
.../create_function_1.out}                         |   0
.../create_function_2.out}                         |   0
.../largeobject.out}                               |   0
.../largeobject_1.out}                             |   0
.../{output/misc.source => expected/misc.out}      |   0
.../tablespace.source => expected/tablespace.out}  |   0
src/test/regress/pg_regress.c                      | 150 ---------------------
src/test/regress/pg_regress.h                      |   2 -
src/test/regress/sql/.gitignore                    |   9 --
.../constraints.source => sql/constraints.sql}     |   0
.../regress/{input/copy.source => sql/copy.sql}    |   0
.../create_function_0.sql}                         |   0
.../create_function_1.sql}                         |   0
.../create_function_2.sql}                         |   0
.../largeobject.source => sql/largeobject.sql}     |   0
.../regress/{input/misc.source => sql/misc.sql}    |   0
.../tablespace.source => sql/tablespace.sql}       |   0
38 files changed, 8 insertions(+), 197 deletions(-)