[mutter] cogl: Remove unused CoglPipelineLightingState

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit e84dbd7faf59424626dc5ca589da288b0ce01c29
Author: Adam Jackson <ajax redhat com>
Date:   Tue Oct 29 14:38:49 2019 -0400

    cogl: Remove unused CoglPipelineLightingState
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/904

 cogl/cogl/cogl-pipeline-private.h | 20 --------------------
 cogl/cogl/cogl-pipeline.c         | 24 ------------------------
 2 files changed, 44 deletions(-)
---
diff --git a/cogl/cogl/cogl-pipeline-private.h b/cogl/cogl/cogl-pipeline-private.h
index 09f1af549..59f043b67 100644
--- a/cogl/cogl/cogl-pipeline-private.h
+++ b/cogl/cogl/cogl-pipeline-private.h
@@ -190,25 +190,6 @@ typedef enum _CoglPipelineState
    COGL_PIPELINE_STATE_VERTEX_SNIPPETS | \
    COGL_PIPELINE_STATE_FRAGMENT_SNIPPETS)
 
-typedef enum
-{
-  COGL_PIPELINE_LIGHTING_STATE_PROPERTY_AMBIENT = 1,
-  COGL_PIPELINE_LIGHTING_STATE_PROPERTY_DIFFUSE,
-  COGL_PIPELINE_LIGHTING_STATE_PROPERTY_SPECULAR,
-  COGL_PIPELINE_LIGHTING_STATE_PROPERTY_EMISSION,
-  COGL_PIPELINE_LIGHTING_STATE_PROPERTY_SHININESS
-} CoglPipelineLightingStateProperty;
-
-typedef struct
-{
-  /* Standard OpenGL lighting model attributes */
-  float ambient[4];
-  float diffuse[4];
-  float specular[4];
-  float emission[4];
-  float shininess;
-} CoglPipelineLightingState;
-
 typedef struct
 {
   /* Determines what fragments are discarded based on their alpha */
@@ -261,7 +242,6 @@ typedef struct
 
 typedef struct
 {
-  CoglPipelineLightingState lighting_state;
   CoglPipelineAlphaFuncState alpha_state;
   CoglPipelineBlendState blend_state;
   CoglHandle user_program;
diff --git a/cogl/cogl/cogl-pipeline.c b/cogl/cogl/cogl-pipeline.c
index 4bae0d560..b119a2c12 100644
--- a/cogl/cogl/cogl-pipeline.c
+++ b/cogl/cogl/cogl-pipeline.c
@@ -95,7 +95,6 @@ _cogl_pipeline_init_default_pipeline (void)
   /* XXX: NB: It's important that we zero this to avoid polluting
    * pipeline hash values with un-initialized data */
   CoglPipelineBigState *big_state = g_slice_new0 (CoglPipelineBigState);
-  CoglPipelineLightingState *lighting_state = &big_state->lighting_state;
   CoglPipelineAlphaFuncState *alpha_state = &big_state->alpha_state;
   CoglPipelineBlendState *blend_state = &big_state->blend_state;
   CoglPipelineCullFaceState *cull_face_state = &big_state->cull_face_state;
@@ -142,29 +141,6 @@ _cogl_pipeline_init_default_pipeline (void)
   /* Use the same defaults as the GL spec... */
   cogl_color_init_from_4ub (&pipeline->color, 0xff, 0xff, 0xff, 0xff);
 
-  /* Use the same defaults as the GL spec... */
-  lighting_state->ambient[0] = 0.2;
-  lighting_state->ambient[1] = 0.2;
-  lighting_state->ambient[2] = 0.2;
-  lighting_state->ambient[3] = 1.0;
-
-  lighting_state->diffuse[0] = 0.8;
-  lighting_state->diffuse[1] = 0.8;
-  lighting_state->diffuse[2] = 0.8;
-  lighting_state->diffuse[3] = 1.0;
-
-  lighting_state->specular[0] = 0;
-  lighting_state->specular[1] = 0;
-  lighting_state->specular[2] = 0;
-  lighting_state->specular[3] = 1.0;
-
-  lighting_state->emission[0] = 0;
-  lighting_state->emission[1] = 0;
-  lighting_state->emission[2] = 0;
-  lighting_state->emission[3] = 1.0;
-
-  lighting_state->shininess = 0.0f;
-
   /* Use the same defaults as the GL spec... */
   alpha_state->alpha_func = COGL_PIPELINE_ALPHA_FUNC_ALWAYS;
   alpha_state->alpha_func_reference = 0.0;