[mutter] cogl: Remove unused _cogl_framebuffer_{push,pop}_projection

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

commit c5a936e0e89447f70f6190f66daa816edc9c8fd5
Author: Adam Jackson <ajax redhat com>
Date:   Tue Jan 21 14:14:06 2020 -0500

    cogl: Remove unused _cogl_framebuffer_{push,pop}_projection
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/1015

 cogl/cogl/cogl-framebuffer-private.h |  6 ------
 cogl/cogl/cogl-framebuffer.c         | 24 ------------------------
 2 files changed, 30 deletions(-)
---
diff --git a/cogl/cogl/cogl-framebuffer-private.h b/cogl/cogl/cogl-framebuffer-private.h
index 09a79981c..579fdec0c 100644
--- a/cogl/cogl/cogl-framebuffer-private.h
+++ b/cogl/cogl/cogl-framebuffer-private.h
@@ -332,12 +332,6 @@ _cogl_offscreen_new_with_texture_full (CoglTexture *texture,
                                        CoglOffscreenFlags create_flags,
                                        int level);
 
-void
-_cogl_framebuffer_push_projection (CoglFramebuffer *framebuffer);
-
-void
-_cogl_framebuffer_pop_projection (CoglFramebuffer *framebuffer);
-
 void
 _cogl_framebuffer_save_clip_stack (CoglFramebuffer *framebuffer);
 
diff --git a/cogl/cogl/cogl-framebuffer.c b/cogl/cogl/cogl-framebuffer.c
index 917efe1a7..49403ff9b 100644
--- a/cogl/cogl/cogl-framebuffer.c
+++ b/cogl/cogl/cogl-framebuffer.c
@@ -1599,30 +1599,6 @@ cogl_framebuffer_orthographic (CoglFramebuffer *framebuffer,
       COGL_FRAMEBUFFER_STATE_PROJECTION;
 }
 
-void
-_cogl_framebuffer_push_projection (CoglFramebuffer *framebuffer)
-{
-  CoglMatrixStack *projection_stack =
-    _cogl_framebuffer_get_projection_stack (framebuffer);
-  cogl_matrix_stack_push (projection_stack);
-
-  if (framebuffer->context->current_draw_buffer == framebuffer)
-    framebuffer->context->current_draw_buffer_changes |=
-      COGL_FRAMEBUFFER_STATE_PROJECTION;
-}
-
-void
-_cogl_framebuffer_pop_projection (CoglFramebuffer *framebuffer)
-{
-  CoglMatrixStack *projection_stack =
-    _cogl_framebuffer_get_projection_stack (framebuffer);
-  cogl_matrix_stack_pop (projection_stack);
-
-  if (framebuffer->context->current_draw_buffer == framebuffer)
-    framebuffer->context->current_draw_buffer_changes |=
-      COGL_FRAMEBUFFER_STATE_PROJECTION;
-}
-
 void
 cogl_framebuffer_get_modelview_matrix (CoglFramebuffer *framebuffer,
                                        CoglMatrix *matrix)