Fix math.randomseed seeding potentially throwing

[Morilli]

This fixes a potential exception in the math.randomseed() call when os.clock() returns certain values. Using os.time() is the standard method anyways.

Example: For os.clock() == 350.79, math.randomseed(350.79*100000000000) will throw an exception saying bad argument #1 to 'randomseed' (number has no integer representation).

[KeeyanGhoreshi]

Thanks, although this seeding has no purpose anymore since the script doesn't use any random values, it's a holdover from the firered code where random delays were added to inputs to help produce different rng outcomes. Rather than fixing it, this line can just be completely removed.