clk: Remove superfluous gd declarations

The clk uclass was converted to support a live device tree recently,
hence the global data pointer declarations are no longer needed.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 32be2e8..fbea720 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -13,8 +13,6 @@
 #include <dt-structs.h>
 #include <errno.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 static inline const struct clk_ops *clk_dev_ops(struct udevice *dev)
 {
 	return (const struct clk_ops *)dev->driver->ops;
diff --git a/drivers/clk/clk_fixed_rate.c b/drivers/clk/clk_fixed_rate.c
index 9dd6bc5..c9a9f0a 100644
--- a/drivers/clk/clk_fixed_rate.c
+++ b/drivers/clk/clk_fixed_rate.c
@@ -8,8 +8,6 @@
 #include <clk-uclass.h>
 #include <dm.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 struct clk_fixed_rate {
 	unsigned long fixed_rate;
 };