build: pkg anti-pattern: use defaults

Use the defaults in the pkg check where the default error message is
sufficient to identify which package is missing.

Change-Id: I09cf1888ea4f41b5c22d18d72b169d2ca32fc339
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/configure.ac b/configure.ac
index afcc901..e82dd1c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,9 +12,9 @@
 AC_PROG_MAKE_SET
 
 # Checks for libraries.
-PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],, [AC_MSG_ERROR([Could not find sdbusplus...openbmc/sdbusplus package required])])
-PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces],, [AC_MSG_ERROR([Could not find phosphor-dbus-interfaces...openbmc/phosphor-dbus-interfaces package required])])
-PKG_CHECK_MODULES([PHOSPHOR_LOGGING], [phosphor-logging],, [AC_MSG_ERROR([Could not find phosphor-logging...openbmc/phosphor-logging package required])])
+PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus])
+PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces])
+PKG_CHECK_MODULES([PHOSPHOR_LOGGING], [phosphor-logging])
 
 AC_ARG_VAR(USER_MANAGER_BUSNAME, [The Dbus busname to own])
 AS_IF([test "x$USER_MANAGER_BUSNAME" == "x"], [USER_MANAGER_BUSNAME="xyz.openbmc_project.User.Manager"])