i2c: pca954x: Remove pointer to GD

There is no reason to have any pointer to GD that's why remove it.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index b4e3e16..795288f 100644
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -10,12 +10,9 @@
 #include <i2c.h>
 #include <log.h>
 #include <malloc.h>
-#include <asm/global_data.h>
 
 #include <asm-generic/gpio.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 enum pca_type {
 	PCA9543,
 	PCA9544,