I'm not a Fedora user, but I'd say that's the right package to uninstall. Of course, the better solution is to install your javascript locally instead of system-wide. For example, in $HOME/.local. Then make sure $HOME/.local/bin is in your $PATH before /usr/bin and the other system directories.
Use the file command to determine if an executable is 32- or 64-bit. For example, when I build javascript on my multilib machine
Code:
andrew@aragorn ~/MyBuilds/js/js
It is 09:20:24 on Sun Feb 26
[gmake -f Makefile.ref all] --> file Linux*/js
Linux_All_DBG.OBJ/libjs.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, not stripped