Remove unused Bullet module and thirdparty code

It has been disabled in `master` since one year (#45852) and our plan
is for Bullet, and possibly other thirdparty physics engines, to be
implemented via GDExtension so that they can be selected by the users
who need them.

2 files changed, 1 insertions, 7 deletions

diff --git a/doc/classes/ProjectSettings.xml b/doc/classes/ProjectSettings.xml
index be2c1ad372..701e947fd1 100644
--- a/doc/classes/ProjectSettings.xml
+++ b/doc/classes/ProjectSettings.xml
@@ -1493,7 +1493,7 @@
 		</member>
 		<member name="physics/3d/physics_engine" type="String" setter="" getter="" default="&quot;DEFAULT&quot;">
 			Sets which physics engine to use for 3D physics.
-			"DEFAULT" is currently the [url=https://bulletphysics.org]Bullet[/url] physics engine. The "GodotPhysics3D" engine is still supported as an alternative.
+			"DEFAULT" and "GodotPhysics3D" are the same, as there is currently no alternative 3D physics server implemented.
 		</member>
 		<member name="physics/3d/run_on_separate_thread" type="bool" setter="" getter="" default="false">
 			If [code]true[/code], the 3D physics server runs on a separate thread, making better use of multi-core CPUs. If [code]false[/code], the 3D physics server runs on the main thread. Running the physics server on a separate thread can increase performance, but restricts API access to only physics process.
@@ -1504,10 +1504,6 @@
 		<member name="physics/3d/sleep_threshold_linear" type="float" setter="" getter="" default="0.1">
 			Threshold linear velocity under which a 3D physics body will be considered inactive. See [constant PhysicsServer3D.SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_THRESHOLD].
 		</member>
-		<member name="physics/3d/smooth_trimesh_collision" type="bool" setter="" getter="" default="false">
-			If [code]true[/code], smooths out collision with trimesh shapes ([ConcavePolygonShape3D]) by telling the Bullet physics engine to generate internal edge information for every trimesh shape created.
-			[b]Note:[/b] Only effective if [member physics/3d/physics_engine] is set to [code]Bullet[/code], [i]not[/i] [code]DEFAULT[/code] or [code]GodotPhysics[/code].
-		</member>
 		<member name="physics/3d/solver/contact_max_allowed_penetration" type="float" setter="" getter="" default="0.01">
 			Maximum distance a shape can penetrate another shape before it is considered a collision. See [constant PhysicsServer3D.SPACE_PARAM_CONTACT_MAX_ALLOWED_PENETRATION].
 		</member>
diff --git a/doc/classes/RigidDynamicBody3D.xml b/doc/classes/RigidDynamicBody3D.xml
index 85cdcc7f8f..285176b8b0 100644
--- a/doc/classes/RigidDynamicBody3D.xml
+++ b/doc/classes/RigidDynamicBody3D.xml
@@ -227,7 +227,6 @@
 				[code]body[/code] the [Node], if it exists in the tree, of the other [PhysicsBody3D] or [GridMap].
 				[code]body_shape_index[/code] the index of the [Shape3D] of the other [PhysicsBody3D] or [GridMap] used by the [PhysicsServer3D]. Get the [CollisionShape3D] node with [code]body.shape_owner_get_owner(body.shape_find_owner(body_shape_index))[/code].
 				[code]local_shape_index[/code] the index of the [Shape3D] of this RigidDynamicBody3D used by the [PhysicsServer3D]. Get the [CollisionShape3D] node with [code]self.shape_owner_get_owner(self.shape_find_owner(local_shape_index))[/code].
-				[b]Note:[/b] Bullet physics cannot identify the shape index when using a [ConcavePolygonShape3D]. Don't use multiple [CollisionShape3D]s when using a [ConcavePolygonShape3D] with Bullet physics if you need shape indices.
 			</description>
 		</signal>
 		<signal name="body_shape_exited">
@@ -241,7 +240,6 @@
 				[code]body[/code] the [Node], if it exists in the tree, of the other [PhysicsBody3D] or [GridMap].
 				[code]body_shape_index[/code] the index of the [Shape3D] of the other [PhysicsBody3D] or [GridMap] used by the [PhysicsServer3D]. Get the [CollisionShape3D] node with [code]body.shape_owner_get_owner(body.shape_find_owner(body_shape_index))[/code].
 				[code]local_shape_index[/code] the index of the [Shape3D] of this RigidDynamicBody3D used by the [PhysicsServer3D]. Get the [CollisionShape3D] node with [code]self.shape_owner_get_owner(self.shape_find_owner(local_shape_index))[/code].
-				[b]Note:[/b] Bullet physics cannot identify the shape index when using a [ConcavePolygonShape3D]. Don't use multiple [CollisionShape3D]s when using a [ConcavePolygonShape3D] with Bullet physics if you need shape indices.
 			</description>
 		</signal>
 		<signal name="sleeping_state_changed">