scal: remove dead code
scal: remove dead code

beta is set but immediately overrwritten before being read, therefore this
line had no effect

ksophocleous/speexdsp,felipebetancur/speexdsp,felipebetancur/speexdsp,ksophocleous/speexdsp,maolin-cdzl/speexdsp,maolin-cdzl/speexdsp,maolin-cdzl/speexdsp,felipebetancur/speexdsp,felipebetancur/speexdsp,ksophocleous/speexdsp,maolin-cdzl/speexdsp,ksophocleous/speexdsp