SF: Remove conditional lock in setPowerMode

The mCurrentState access in setPowerModeInternal was only for looking up
the sequence ID of the display.

Bug: 74619554
Test: Boot
Change-Id: If0fad8f19bf8680f247476c3ffe52667e061fdd3
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 4977ca0..d3f0ece 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -524,7 +524,7 @@
     // called on the main thread in response to setActiveConfig()
     void setActiveConfigInternal(const sp<DisplayDevice>& display, int mode);
     // called on the main thread in response to setPowerMode()
-    void setPowerModeInternal(const sp<DisplayDevice>& display, int mode, bool stateLockHeld);
+    void setPowerModeInternal(const sp<DisplayDevice>& display, int mode);
 
     // Called on the main thread in response to setActiveColorMode()
     void setActiveColorModeInternal(const sp<DisplayDevice>& display, ui::ColorMode colorMode,