drm/i915/bios: remove some unused leftover declarations

Remove some unused declarations probably left behind after some
refactoring.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231221105414.1518267-1-jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_bios.h

@@ -246,13 +246,10 @@ bool intel_bios_is_valid_vbt(const void *buf, size_t size);
 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
 bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
-bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
 bool intel_bios_get_dsc_params(struct intel_encoder *encoder,
 			       struct intel_crtc_state *crtc_state,
 			       int dsc_max_bpc);
-bool intel_bios_port_supports_typec_usb(struct drm_i915_private *i915, enum port port);
-bool intel_bios_port_supports_tbt(struct drm_i915_private *i915, enum port port);
 
 const struct intel_bios_encoder_data *
 intel_bios_encoder_data_lookup(struct drm_i915_private *i915, enum port port);