Remove editor splash screen with sponsors logo

The Godot Project Leadership Committe has decided to update the sponsoring
tiers so that the Platinum Sponsorship no longer includes a logo on the
editor splash screen.

This lets us reclaim the editor splash screen space for community-related
content instead of sponsors (e.g. a different community-designed splash
screen for each stable branch?).

Also removes two Platinum Sponsors whose sponsorship has expired earlier this
year.

5 files changed, 14 insertions, 10 deletions

diff --git a/DONORS.md b/DONORS.md
index 33a68650d9..f7026d9470 100644
--- a/DONORS.md
+++ b/DONORS.md
@@ -13,8 +13,6 @@ generous deed immortalized in the next stable release of Godot Engine.
 ## Platinum sponsors
 
     Gamblify <https://www.gamblify.com>
-    Heroic Labs <https://heroiclabs.com>
-    Spiffcode <http://www.spiffcode.com>
 
 ## Gold sponsors
 
diff --git a/SConstruct b/SConstruct
index 83bd1560ff..1922e904d0 100644
--- a/SConstruct
+++ b/SConstruct
@@ -149,7 +149,7 @@ opts.Add(BoolVariable("disable_3d", "Disable 3D nodes for a smaller executable",
 opts.Add(BoolVariable("disable_advanced_gui", "Disable advanced GUI nodes and behaviors", False))
 opts.Add("disable_classes", "Disable given classes (comma separated)", "")
 opts.Add(BoolVariable("modules_enabled_by_default", "If no, disable all modules except ones explicitly enabled", True))
-opts.Add(BoolVariable("no_editor_splash", "Don't use the custom splash screen for the editor", False))
+opts.Add(BoolVariable("no_editor_splash", "Don't use the custom splash screen for the editor", True))
 opts.Add("system_certs_path", "Use this path as SSL certificates default for editor (for package maintainers)", "")
 opts.Add(BoolVariable("use_precise_math_checks", "Math checks use very precise epsilon (debug option)", False))
 
@@ -329,6 +329,9 @@ if env_base["target"] == "debug":
 if env_base["use_precise_math_checks"]:
     env_base.Append(CPPDEFINES=["PRECISE_MATH_CHECKS"])
 
+if not env_base.File("#main/splash_editor.png").exists():
+    # Force disabling editor splash if missing.
+    env_base["no_editor_splash"] = True
 if env_base["no_editor_splash"]:
     env_base.Append(CPPDEFINES=["NO_EDITOR_SPLASH"])
 
diff --git a/main/SCsub b/main/SCsub
index 87d64e48f9..79dc4bff15 100644
--- a/main/SCsub
+++ b/main/SCsub
@@ -20,12 +20,13 @@ env_main.CommandNoCache(
     env.Run(main_builders.make_splash, "Building splash screen header."),
 )
 
-env_main.Depends("#main/splash_editor.gen.h", "#main/splash_editor.png")
-env_main.CommandNoCache(
-    "#main/splash_editor.gen.h",
-    "#main/splash_editor.png",
-    env.Run(main_builders.make_splash_editor, "Building editor splash screen header."),
-)
+if not env_main["no_editor_splash"]:
+    env_main.Depends("#main/splash_editor.gen.h", "#main/splash_editor.png")
+    env_main.CommandNoCache(
+        "#main/splash_editor.gen.h",
+        "#main/splash_editor.png",
+        env.Run(main_builders.make_splash_editor, "Building editor splash screen header."),
+    )
 
 env_main.Depends("#main/app_icon.gen.h", "#main/app_icon.png")
 env_main.CommandNoCache(
diff --git a/main/main.cpp b/main/main.cpp
index b4fbc1929c..e760c930f2 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -56,7 +56,6 @@
 #include "main/main_timer_sync.h"
 #include "main/performance.h"
 #include "main/splash.gen.h"
-#include "main/splash_editor.gen.h"
 #include "modules/register_module_types.h"
 #include "platform/register_platform_apis.h"
 #include "scene/main/scene_tree.h"
@@ -86,6 +85,9 @@
 #include "editor/editor_settings.h"
 #include "editor/progress_dialog.h"
 #include "editor/project_manager.h"
+#ifndef NO_EDITOR_SPLASH
+#include "main/splash_editor.gen.h"
+#endif
 #endif
 
 #include "modules/modules_enabled.gen.h" // For mono.
diff --git a/main/splash_editor.png b/main/splash_editor.png
deleted file mode 100644
index 49af9fde22..0000000000
--- a/main/splash_editor.png
+++ /dev/null