soc/amd: Remove defined but unwritten functions

There are functions defined on headers with no code written for. They
probably existed earlier, were removed and forgot in the headers. Remove
functions from headers if there's no actual code written for.

BUG=b:123564495
TEST=Build grunt.

Change-Id: Ia6a12e22a0944351c455dc2c3b534f09a258bd7b
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-on: https://review.coreboot.org/c/31507
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/stoneyridge/include/soc/northbridge.h

@@ -121,10 +121,8 @@ void smm_region_info(void **start, size_t *size);
  */
 int smm_subregion(int sub, void **start, size_t *size);
 void domain_enable_resources(struct device *dev);
-void domain_read_resources(struct device *dev);
 void domain_set_resources(struct device *dev);
 void fam15_finalize(void *chip_info);
-void setup_uma_memory(void);
 uint32_t nb_ioapic_read(unsigned int index);
 void nb_ioapic_write(unsigned int index, uint32_t value);
 void *get_ap_entry_ptr(void);

src/soc/amd/stoneyridge/include/soc/southbridge.h

@@ -477,7 +477,6 @@ struct soc_power_reg {
 
 void enable_aoac_devices(void);
 void sb_enable_rom(void);
-void configure_stoneyridge_i2c(void);
 void sb_clk_output_48Mhz(u32 osc);
 void sb_disable_4dw_burst(void);
 void sb_enable(struct device *dev);