Remove an unnecessary trim() on the account login page.

This was added back in 2012 as r76560 / abb680c when the page is restructured, but is unnecessary as SwatEntry auto-trims its values by default since https://github.com/silverorange/swat/commit/994d0032275f0ed5184c7a8f596e29fb449ede22 in 2009, and I can't find any code anywhere that turns that off.