drm/i915: remove left over dead code

ae80152d ("drm/i915: Rewrite VLV/CHV
watermark code") removed everything that would have used those vars.
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1456763047-28828-1-git-send-email-eric.engestrom@imgtec.com

drivers/gpu/drm/i915/intel_pm.c

@@ -487,20 +487,6 @@ static const struct intel_watermark_params g4x_cursor_wm_info = {
 	.guard_size = 2,
 	.cacheline_size = G4X_FIFO_LINE_SIZE,
 };
-static const struct intel_watermark_params valleyview_wm_info = {
-	.fifo_size = VALLEYVIEW_FIFO_SIZE,
-	.max_wm = VALLEYVIEW_MAX_WM,
-	.default_wm = VALLEYVIEW_MAX_WM,
-	.guard_size = 2,
-	.cacheline_size = G4X_FIFO_LINE_SIZE,
-};
-static const struct intel_watermark_params valleyview_cursor_wm_info = {
-	.fifo_size = I965_CURSOR_FIFO,
-	.max_wm = VALLEYVIEW_CURSOR_MAX_WM,
-	.default_wm = I965_CURSOR_DFT_WM,
-	.guard_size = 2,
-	.cacheline_size = G4X_FIFO_LINE_SIZE,
-};
 static const struct intel_watermark_params i965_cursor_wm_info = {
 	.fifo_size = I965_CURSOR_FIFO,
 	.max_wm = I965_CURSOR_MAX_WM,