Check if deleteCamera exist

[kalwalt]

deleteCamera() is defined here:

jsartoolkitNFT/js/artoolkitNFT.api.js

Line 839 in b86b70b

artoolkitNFT.deleteCamera(this.id);

and here

jsartoolkitNFT/js/artoolkitNFT_ES6.api.js

Line 844 in b86b70b

artoolkitNFT.deleteCamera(this.id);

but doesn't exist a C++ method defined with this name inside ARToolKitJS.cpp. Maybe some old code ?