float_to_bits: Remove offset
float_to_bits: Remove offset

This is a symptom of frequency offset and it's the demodulator job to
correct this ...

Thanks to Frank A. Stevenson for noticing this legacy hack

Signed-off-by: Sylvain Munaut <349f318521b45672c77207abf1a5ed60eb011db1@246tNt.com>

Tim---/osmo-tetra,dachomk/osmo-tetra-sq5bpf,sq5bpf/osmo-tetra-sq5bpf,kantooon/osmo-tetra,dachomk/osmo-tetra-sq5bpf,geosphere/osmo-tetra,bastibl/osmo-tetra,luckyhacky/osmo-tetra-test,osmocom/osmo-tetra,marcelmaatkamp/docker-gnuradio-osmocom-tetra,Tim---/osmo-tetra,kantooon/osmo-tetra,luckyhacky/osmo-tetra-test,dachomk/osmo-tetra-sq5bpf,dachomk/osmo-tetra-sq5bpf,geosphere/osmo-tetra,marcelmaatkamp/docker-gnuradio-osmocom-tetra,luckyhacky/osmo-tetra-test,geosphere/osmo-tetra,sq5bpf/osmo-tetra-sq5bpf,bastibl/osmo-tetra,sq5bpf/osmo-tetra-sq5bpf,marcelmaatkamp/docker-gnuradio-osmocom-tetra,Tim---/osmo-tetra,kantooon/osmo-tetra,bastibl/osmo-tetra,bastibl/osmo-tetra,sq5bpf/osmo-tetra-sq5bpf,marcelmaatkamp/docker-gnuradio-osmocom-tetra,osmocom/osmo-tetra,osmocom/osmo-tetra