Remove unnecessary args from GPIO functions

Now that gpio_init() and read_gpios() doesn't use
D-Bus, they don't need the D-Bus connection parameter.

Change-Id: Id7f3ee6547bed7c0c0eed5d75cba2d6ff239d0fa
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/libopenbmc_intf/gpio_configs.h b/libopenbmc_intf/gpio_configs.h
index 233e27f..d462eb5 100644
--- a/libopenbmc_intf/gpio_configs.h
+++ b/libopenbmc_intf/gpio_configs.h
@@ -49,7 +49,7 @@
 } GpioConfigs;
 
 /* Read system configuration for GPIOs. */
-gboolean read_gpios(GDBusConnection *connection, GpioConfigs *gpios);
+gboolean read_gpios(GpioConfigs *gpios);
 /* Frees internal buffers. Does not free parameter. Does not close GPIOs. */
 void free_gpios(GpioConfigs *gpios);