Remove redundant getenv() for PGUSER, in psql help.

Previously psql obtained the value of PGUSER twice to display
a default user in its help message.

Author: Kota Miyake
Reviewed-by: Nitin Jadhav, Fujii Masao
Discussion: https://postgr.es/m/[email protected]

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4a4241e15b246663fc44b5e5355bc6d19c6d2aa6

Modified Files
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src/bin/psql/help.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

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