Remove unnecessary static type qualifiers

Hi, all

When I read the libpq source code, I found unnecessary static type qualifiers
in PQsetClientEncoding().

diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c
index 0258d9ace3c..300ddfffd55 100644
--- a/src/interfaces/libpq/fe-connect.c
+++ b/src/interfaces/libpq/fe-connect.c
@@ -7717,7 +7717,7 @@ int
PQsetClientEncoding(PGconn *conn, const char *encoding)
{
char qbuf[128];
- static const char query[] = "set client_encoding to '%s'";
+ const char query[] = "set client_encoding to '%s'";
PGresult *res;
int status;

--
Regrads,
Japin Li