Remove even more Matrix4 Euler rotation methods

It seems pretty much every possible permutation of X,Y,Z Euler angles was
implemented in its own public method, including both degrees and radians
variants, none of which were ever used. I'm not sure if this code was
autogenerated or if the original author was paid by the line.

libs/math/Matrix4.cpp

@@ -238,166 +238,6 @@ Matrix4 Matrix4::getRotationForEulerXYZDegrees(const Vector3& euler)
 	return getRotationForEulerXYZ(euler_degrees_to_radians(euler));
 }
 
-Matrix4 Matrix4::getRotationForEulerYZX(const Vector3& euler)
-{
-	double cx = cos(euler[0]);
-	double sx = sin(euler[0]);
-	double cy = cos(euler[1]);
-	double sy = sin(euler[1]);
-	double cz = cos(euler[2]);
-	double sz = sin(euler[2]);
-
-	return Matrix4::byColumns(
-		cy*cz,
-		cx*cy*sz + sx*sy,
-		sx*cy*sz - cx*sy,
-		0,
-		-sz,
-		cx*cz,
-		sx*cz,
-		0,
-		sy*cz,
-		cx*sy*sz - sx*cy,
-		sx*sy*sz + cx*cy,
-		0,
-		0,
-		0,
-		0,
-		1
-	);
-}
-
-Matrix4 Matrix4::getRotationForEulerXZY(const Vector3& euler)
-{
-	double cx = cos(euler[0]);
-	double sx = sin(euler[0]);
-	double cy = cos(euler[1]);
-	double sy = sin(euler[1]);
-	double cz = cos(euler[2]);
-	double sz = sin(euler[2]);
-
-	return Matrix4::byColumns(
-		cy*cz,
-		sz,
-		-sy*cz,
-		0,
-		sx*sy - cx*cy*sz,
-		cx*cz,
-		cx*sy*sz + sx*cy,
-		0,
-		sx*cy*sz + cx*sy,
-		-sx*cz,
-		cx*cy - sx*sy*sz,
-		0,
-		0,
-		0,
-		0,
-		1
-	);
-}
-
-Matrix4 Matrix4::getRotationForEulerYXZ(const Vector3& euler)
-{
-	double cx = cos(euler[0]);
-	double sx = sin(euler[0]);
-	double cy = cos(euler[1]);
-	double sy = sin(euler[1]);
-	double cz = cos(euler[2]);
-	double sz = sin(euler[2]);
-
-	return Matrix4::byColumns(
-		cy*cz - sx*sy*sz,
-		cy*sz + sx*sy*cz,
-		-cx*sy,
-		0,
-		-cx*sz,
-		cx*cz,
-		sx,
-		0,
-		sy*cz + sx*cy*sz,
-		sy*sz - sx*cy*cz,
-		cx*cy,
-		0,
-		0,
-		0,
-		0,
-		1
-	);
-}
-
-Matrix4 Matrix4::getRotationForEulerYXZDegrees(const Vector3& euler)
-{
-	return getRotationForEulerYXZ(euler_degrees_to_radians(euler));
-}
-
-Matrix4 Matrix4::getRotationForEulerZXY(const Vector3& euler)
-{
-	double cx = cos(euler[0]);
-	double sx = sin(euler[0]);
-	double cy = cos(euler[1]);
-	double sy = sin(euler[1]);
-	double cz = cos(euler[2]);
-	double sz = sin(euler[2]);
-
-	return Matrix4::byColumns(
-		cy*cz + sx*sy*sz,
-		cx*sz,
-		sx*cy*sz - sy*cz,
-		0,
-		sx*sy*cz - cy*sz,
-		cx*cz,
-		sy*sz + sx*cy*cz,
-		0,
-		cx*sy,
-		-sx,
-		cx*cy,
-		0,
-		0,
-		0,
-		0,
-		1
-	);
-}
-
-Matrix4 Matrix4::getRotationForEulerZXYDegrees(const Vector3& euler)
-{
-	return getRotationForEulerZXY(euler_degrees_to_radians(euler));
-}
-
-Matrix4 Matrix4::getRotationForEulerZYX(const Vector3& euler)
-{
-	double cx = cos(euler[0]);
-	double sx = sin(euler[0]);
-	double cy = cos(euler[1]);
-	double sy = sin(euler[1]);
-	double cz = cos(euler[2]);
-	double sz = sin(euler[2]);
-
-	return Matrix4::byColumns(
-		cy*cz,
-		cx*sz + sx*sy*cz,
-		sx*sz - cx*sy*cz,
-		0,
-		-cy*sz,
-		cx*cz - sx*sy*sz,
-		sx*cz + cx*sy*sz,
-		0,
-		sy,
-		-sx*cy,
-		cx*cy,
-		0,
-		0,
-		0,
-		0,
-		1
-	);
-}
-
-Matrix4 Matrix4::getRotationForEulerZYXDegrees(const Vector3& euler)
-{
-	return getRotationForEulerZYX(euler_degrees_to_radians(euler));
-}
-
 // Get a scale matrix
 Matrix4 Matrix4::getScale(const Vector3& scale)
 {