bullet: Fix misplaced INLINE getter

panda/src/bullet/bulletSoftBodyMaterial.I

@@ -30,3 +30,12 @@ empty() {
 
   return BulletSoftBodyMaterial(material);
 }
+
+/**
+ *
+ */
+INLINE btSoftBody::Material &BulletSoftBodyMaterial::
+get_material() const {
+
+  return _material;
+}

panda/src/bullet/bulletSoftBodyMaterial.cxx

@@ -23,15 +23,6 @@ BulletSoftBodyMaterial(btSoftBody::Material &material) : _material(material) {
 
 }
 
-/**
- *
- */
-btSoftBody::Material &BulletSoftBodyMaterial::
-get_material() const {
-
-  return _material;
-}
-
 /**
  * Getter for the property m_kLST.
  */