drm/i915: kill intel_ddc_probe

We have way too much lying hardware to rely on a simple "does someone
answer on the ddc i2c address?" check. And now it's unused, so just
kill it.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_drv.h

@@ -342,7 +342,6 @@ struct intel_fbc_work {
 };
 
 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
-extern bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus);
 
 extern void intel_attach_force_audio_property(struct drm_connector *connector);
 extern void intel_attach_broadcast_rgb_property(struct drm_connector *connector);

drivers/gpu/drm/i915/intel_modes.c

@@ -32,34 +32,6 @@
 #include "intel_drv.h"
 #include "i915_drv.h"
 
-/**
- * intel_ddc_probe
- *
- */
-bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus)
-{
-	struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private;
-	u8 out_buf[] = { 0x0, 0x0};
-	u8 buf[2];
-	struct i2c_msg msgs[] = {
-		{
-			.addr = DDC_ADDR,
-			.flags = 0,
-			.len = 1,
-			.buf = out_buf,
-		},
-		{
-			.addr = DDC_ADDR,
-			.flags = I2C_M_RD,
-			.len = 1,
-			.buf = buf,
-		}
-	};
-
-	return i2c_transfer(intel_gmbus_get_adapter(dev_priv, ddc_bus),
-			    msgs, 2) == 2;
-}
-
 /**
  * intel_ddc_get_modes - get modelist from monitor
  * @connector: DRM connector device to use