device: Drop unused `uma_memory_{base,size}` globals

These global variables are not used anywhere. Drop them.

Change-Id: I3fe60b970153d913ae7b005257e2b53647d6f343
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53977
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/device/device.c b/src/device/device.c
index aa10d6f..5611022 100644
--- a/src/device/device.c
+++ b/src/device/device.c
@@ -66,12 +66,6 @@
 
 DECLARE_SPIN_LOCK(dev_lock)
 
-#if CONFIG(GFXUMA)
-/* IGD UMA memory */
-uint64_t uma_memory_base = 0;
-uint64_t uma_memory_size = 0;
-#endif
-
 /**
  * Allocate a new device structure.
  *
diff --git a/src/include/device/device.h b/src/include/device/device.h
index 01e2c82..88b5310 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -168,12 +168,6 @@
 
 extern const char mainboard_name[];
 
-#if CONFIG(GFXUMA)
-/* IGD UMA memory */
-extern uint64_t uma_memory_base;
-extern uint64_t uma_memory_size;
-#endif
-
 /* Generic device interface functions */
 struct device *alloc_dev(struct bus *parent, struct device_path *path);
 void dev_initialize_chips(void);