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.

1 files changed, 0 insertions, 170 deletions

diff --git a/thirdparty/bullet/LinearMath/btReducedVector.cpp b/thirdparty/bullet/LinearMath/btReducedVector.cpp
deleted file mode 100644
index 1539584e7e..0000000000
--- a/thirdparty/bullet/LinearMath/btReducedVector.cpp
+++ /dev/null
@@ -1,170 +0,0 @@
-//
-//  btReducedVector.cpp
-//  LinearMath
-//
-//  Created by Xuchen Han on 4/4/20.
-//
-#include <stdio.h>
-#include "btReducedVector.h"
-#include <cmath>
-
-// returns the projection of this onto other
-btReducedVector btReducedVector::proj(const btReducedVector& other) const
-{
-    btReducedVector ret(m_sz);
-    btScalar other_length2 = other.length2();
-    if (other_length2 < SIMD_EPSILON)
-    {
-        return ret;
-    }
-    return other*(this->dot(other))/other_length2;
-}
-
-void btReducedVector::normalize()
-{
-    if (this->length2() < SIMD_EPSILON)
-    {
-        m_indices.clear();
-        m_vecs.clear();
-        return;
-    }
-    *this /= std::sqrt(this->length2());
-}
-
-bool btReducedVector::testAdd() const
-{
-    int sz = 5;
-    btAlignedObjectArray<int> id1;
-    id1.push_back(1);
-    id1.push_back(3);
-    btAlignedObjectArray<btVector3> v1;
-    v1.push_back(btVector3(1,0,1));
-    v1.push_back(btVector3(3,1,5));
-    btAlignedObjectArray<int> id2;
-    id2.push_back(2);
-    id2.push_back(3);
-    id2.push_back(5);
-    btAlignedObjectArray<btVector3> v2;
-    v2.push_back(btVector3(2,3,1));
-    v2.push_back(btVector3(3,4,9));
-    v2.push_back(btVector3(0,4,0));
-    btAlignedObjectArray<int> id3;
-    id3.push_back(1);
-    id3.push_back(2);
-    id3.push_back(3);
-    id3.push_back(5);
-    btAlignedObjectArray<btVector3> v3;
-    v3.push_back(btVector3(1,0,1));
-    v3.push_back(btVector3(2,3,1));
-    v3.push_back(btVector3(6,5,14));
-    v3.push_back(btVector3(0,4,0));
-    btReducedVector rv1(sz, id1, v1);
-    btReducedVector rv2(sz, id2, v2);
-    btReducedVector ans(sz, id3, v3);
-    bool ret = ((ans == rv1+rv2) && (ans == rv2+rv1));
-    if (!ret)
-        printf("btReducedVector testAdd failed\n");
-    return ret;
-}
-
-bool btReducedVector::testMinus() const
-{
-    int sz = 5;
-    btAlignedObjectArray<int> id1;
-    id1.push_back(1);
-    id1.push_back(3);
-    btAlignedObjectArray<btVector3> v1;
-    v1.push_back(btVector3(1,0,1));
-    v1.push_back(btVector3(3,1,5));
-    btAlignedObjectArray<int> id2;
-    id2.push_back(2);
-    id2.push_back(3);
-    id2.push_back(5);
-    btAlignedObjectArray<btVector3> v2;
-    v2.push_back(btVector3(2,3,1));
-    v2.push_back(btVector3(3,4,9));
-    v2.push_back(btVector3(0,4,0));
-    btAlignedObjectArray<int> id3;
-    id3.push_back(1);
-    id3.push_back(2);
-    id3.push_back(3);
-    id3.push_back(5);
-    btAlignedObjectArray<btVector3> v3;
-    v3.push_back(btVector3(-1,-0,-1));
-    v3.push_back(btVector3(2,3,1));
-    v3.push_back(btVector3(0,3,4));
-    v3.push_back(btVector3(0,4,0));
-    btReducedVector rv1(sz, id1, v1);
-    btReducedVector rv2(sz, id2, v2);
-    btReducedVector ans(sz, id3, v3);
-    bool ret = (ans == rv2-rv1);
-    if (!ret)
-        printf("btReducedVector testMinus failed\n");
-    return ret;
-}
-
-bool btReducedVector::testDot() const
-{
-    int sz = 5;
-    btAlignedObjectArray<int> id1;
-    id1.push_back(1);
-    id1.push_back(3);
-    btAlignedObjectArray<btVector3> v1;
-    v1.push_back(btVector3(1,0,1));
-    v1.push_back(btVector3(3,1,5));
-    btAlignedObjectArray<int> id2;
-    id2.push_back(2);
-    id2.push_back(3);
-    id2.push_back(5);
-    btAlignedObjectArray<btVector3> v2;
-    v2.push_back(btVector3(2,3,1));
-    v2.push_back(btVector3(3,4,9));
-    v2.push_back(btVector3(0,4,0));
-    btReducedVector rv1(sz, id1, v1);
-    btReducedVector rv2(sz, id2, v2);
-    btScalar ans = 58;
-    bool ret = (ans == rv2.dot(rv1) && ans == rv1.dot(rv2));
-    ans = 14+16+9+16+81;
-    ret &= (ans==rv2.dot(rv2));
-    
-    if (!ret)
-        printf("btReducedVector testDot failed\n");
-    return ret;
-}
-
-bool btReducedVector::testMultiply() const
-{
-    int sz = 5;
-    btAlignedObjectArray<int> id1;
-    id1.push_back(1);
-    id1.push_back(3);
-    btAlignedObjectArray<btVector3> v1;
-    v1.push_back(btVector3(1,0,1));
-    v1.push_back(btVector3(3,1,5));
-    btScalar s = 2;
-    btReducedVector rv1(sz, id1, v1);
-    btAlignedObjectArray<int> id2;
-    id2.push_back(1);
-    id2.push_back(3);
-    btAlignedObjectArray<btVector3> v2;
-    v2.push_back(btVector3(2,0,2));
-    v2.push_back(btVector3(6,2,10));
-    btReducedVector ans(sz, id2, v2);
-    bool ret = (ans == rv1*s);
-    if (!ret)
-        printf("btReducedVector testMultiply failed\n");
-    return ret;
-}
-
-void btReducedVector::test() const
-{
-    bool ans = testAdd() && testMinus() && testDot() && testMultiply();
-    if (ans)
-    {
-        printf("All tests passed\n");
-    }
-    else
-    {
-        printf("Tests failed\n");
-    }
-}