index.js
function (spring) {
      if (!spring) { return; }
      var idx = springs.indexOf(spring);
      if (idx > -1) {
        springs.splice(idx, 1);
        return true;
      }
    }
function (spring) {
      if (!spring) { return; }
      var idx = springs.indexOf(spring);
      if (idx > -1) {
        springs.splice(idx, 1);
        return true;
      }
    }
function ( spring ) { if ( ! spring ) { return ; } var idx = springs . indexOf ( spring ) ; if ( idx > - 1 ) { springs . splice ( idx , 1 ) ; return true ; } }
Removes spring from the system

@param {Object} spring to remove. Spring is an object returned by addSpring

@returns {Boolean} true if spring found and removed. falsy otherwise;
Removes spring from the system