chore(processor): remove unused surfaceTexture reference to prevent potential issues

Author: ThibaultBee

core/src/main/java/io/github/thibaultbee/streampack/core/elements/processing/video/DefaultSurfaceProcessor.kt

@@ -299,7 +299,6 @@ private class DefaultSurfaceProcessor(
         if (isReleaseRequested.get()) {
             return
         }
-        surfaceTexture
         val timeConverter = surfaceInputsToTimeConverterMap[surfaceTexture] ?: return
 
         surfaceTexture.updateTexImage()