drm/radeon: drop btc_get_max_clock_from_voltage_dependency_table

It's no longer used now that the underlying bugs are fixed.
Reviewed-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Tested-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/btc_dpm.c

@@ -1170,23 +1170,6 @@ static const struct radeon_blacklist_clocks btc_blacklist_clocks[] =
         { 25000, 30000, RADEON_SCLK_UP }
 };
 
-void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
-						     u32 *max_clock)
-{
-	u32 i, clock = 0;
-
-	if ((table == NULL) || (table->count == 0)) {
-		*max_clock = clock;
-		return;
-	}
-
-	for (i = 0; i < table->count; i++) {
-		if (clock < table->entries[i].clk)
-			clock = table->entries[i].clk;
-	}
-	*max_clock = clock;
-}
-
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
 					u32 clock, u16 max_voltage, u16 *voltage)
 {

drivers/gpu/drm/radeon/btc_dpm.h

@@ -46,8 +46,6 @@ void btc_adjust_clock_combinations(struct radeon_device *rdev,
 				   struct rv7xx_pl *pl);
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
 					u32 clock, u16 max_voltage, u16 *voltage);
-void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
-						     u32 *max_clock);
 void btc_apply_voltage_delta_rules(struct radeon_device *rdev,
 				   u16 max_vddc, u16 max_vddci,
 				   u16 *vddc, u16 *vddci);