nb/intel/pineview: Drop undefined function declaration

This function isn't defined anywhere for Pineview. Drop its declaration.

Change-Id: I38a01d6ba5aaa91de08702c1eb8a2e8c70688192
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42694
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/northbridge/intel/pineview/pineview.h b/src/northbridge/intel/pineview/pineview.h
index 55d098b..7c41b4c 100644
--- a/src/northbridge/intel/pineview/pineview.h
+++ b/src/northbridge/intel/pineview/pineview.h
@@ -239,7 +239,4 @@
 void get_mb_spd_addrmap(u8 *spd_addr_map);
 void mb_pirq_setup(void); /* optional */
 
-struct acpi_rsdp;
-unsigned long northbridge_write_acpi_tables(unsigned long start, struct acpi_rsdp *rsdp);
-
 #endif /* NORTHBRIDGE_INTEL_PINEVIEW_H */