pgsql-server: Remove a few $filter() calls that were not needed.

Log Message:
-----------
Remove a few $filter() calls that were not needed.

Modified Files:
--------------
    pgsql-server/src/bin/initdb:
        Makefile (r1.40 -> r1.41)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/initdb/Makefile.diff?r1=1.40&r2=1.41)
    pgsql-server/src/bin/pg_dump:
        Makefile (r1.50 -> r1.51)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/pg_dump/Makefile.diff?r1=1.50&r2=1.51)
    pgsql-server/src/bin/pg_resetxlog:
        Makefile (r1.8 -> r1.9)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/pg_resetxlog/Makefile.diff?r1=1.8&r2=1.9)
    pgsql-server/src/bin/psql:
        Makefile (r1.46 -> r1.47)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/bin/psql/Makefile.diff?r1=1.46&r2=1.47)
    pgsql-server/src/interfaces/ecpg/pgtypeslib:
        Makefile (r1.19 -> r1.20)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/pgtypeslib/Makefile.diff?r1=1.19&r2=1.20)
    pgsql-server/src/interfaces/ecpg/preproc:
        Makefile (r1.106 -> r1.107)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/Makefile.diff?r1=1.106&r2=1.107)
    pgsql-server/src/interfaces/libpq:
        Makefile (r1.108 -> r1.109)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/libpq/Makefile.diff?r1=1.108&r2=1.109)