style: fix indents

Author: hubgan

ios/PlatformOscillator.mm

@@ -16,7 +16,7 @@
 	}
 
 	void PlatformOscillator::changeFrequency(const float frequency) const {
-			[iosOscillator_ changeFrequency:frequency];
+		[iosOscillator_ changeFrequency:frequency];
 	}
 
 } // namespace audiocontext

src/modules/global.d.ts

@@ -1,8 +1,6 @@
-import type { IGainNode } from '../Gain';
 import type { OscillatorNode } from '../Oscillator';
 
 export declare global {
   function nativeCallSyncHook(): unknown;
   var createOscillator: (frequency: number) => OscillatorNode;
-  var createGain: (gain: number) => IGainNode;
 }