Remove verbose logging from MPV rendering

Removed debug log statements for screen refresh rate and successful render context calls to reduce log noise.

Model/Player/Backends/MPVClient.swift

@@ -509,7 +509,6 @@ final class MPVClient: ObservableObject {
                mode.refreshRate > 0
             {
                 refreshRate = Int(mode.refreshRate)
-                logger.info("Screen refresh rate: \(refreshRate) Hz")
             } else {
                 logger.warning("Failed to get refresh rate from NSScreen.")
             }
@@ -522,8 +521,6 @@ final class MPVClient: ObservableObject {
             if refreshRate <= 0 {
                 refreshRate = 60 // Fallback to 60 Hz
                 logger.warning("Failed to get refresh rate from UIScreen, falling back to 60 Hz.")
-            } else {
-                logger.info("Screen refresh rate: \(refreshRate) Hz")
             }
         #endif
 

Shared/Player/MPV/MPVOGLView.swift

@@ -179,8 +179,6 @@ final class MPVOGLView: GLKView {
                 let result = mpv_render_context_render(OpaquePointer(mpvGL), &params)
                 if result < 0 {
                     logger.error("mpv_render_context_render() failed with error code: \(result)")
-                } else {
-                    logger.info("mpv_render_context_render() called successfully.")
                 }
             }
         }