esteid-browser-plugin: Revert "also catch std::exception from signSHA1"
esteid-browser-plugin: Revert "also catch std::exception from signSHA1"

This "fix" didn't really do anything.

git-svn-id: 804e3bcc3d5e1f71d31da0afe626cb969e0fc117@2871 0d7e1ef0-d974-fc83-f0b3-ccc071561e0e

kalev/esteid-browser-plugin,kalev/esteid-browser-plugin,kalev/esteid-browser-plugin,kalev/esteid-browser-plugin,kalev/esteid-browser-plugin,kalev/esteid-browser-plugin