chore: remove unused SampleRate imports

SampleRate is now a u32 type alias in cpal 0.17, so the import is no
longer needed anywhere.

crates/qbz-audio/src/alsa_backend.rs

@@ -12,7 +12,7 @@ use super::backend::{AlsaPlugin, AudioBackend, AudioBackendType, AudioDevice, Ba
 use rodio::{
     cpal::{
         traits::{DeviceTrait, HostTrait},
-        BufferSize, SampleFormat, SampleRate, StreamConfig, SupportedBufferSize, SupportedStreamConfig,
+        BufferSize, SampleFormat, StreamConfig, SupportedBufferSize, SupportedStreamConfig,
     },
     DeviceSinkBuilder, MixerDeviceSink,
 };

crates/qbz-audio/src/pipewire_backend.rs

@@ -10,7 +10,7 @@ use super::backend::{AudioBackend, AudioBackendType, AudioDevice, BackendConfig,
 use rodio::{
     cpal::{
         traits::{DeviceTrait, HostTrait},
-        BufferSize, SampleFormat, SampleRate, StreamConfig, SupportedBufferSize, SupportedStreamConfig,
+        BufferSize, SampleFormat, StreamConfig, SupportedBufferSize, SupportedStreamConfig,
     },
     DeviceSinkBuilder, MixerDeviceSink,
 };