Remove unused ADisplay_getDensity

Test: presubmit passed
Bug: 207331905
Change-Id: Idf30898141172596b62f53d2b02786cff7a57b01
diff --git a/libs/nativedisplay/ADisplay.cpp b/libs/nativedisplay/ADisplay.cpp
index 6288194..76b85d6 100644
--- a/libs/nativedisplay/ADisplay.cpp
+++ b/libs/nativedisplay/ADisplay.cpp
@@ -50,11 +50,6 @@
     int32_t height{0};
 
     /**
-     * The display density.
-     */
-    float density{0};
-
-    /**
      * The refresh rate of the display configuration, in frames per second.
      */
     float fps{0.0};
@@ -168,8 +163,8 @@
             const ui::DisplayMode& mode = modes[j];
             modesPerDisplay[i].emplace_back(
                     DisplayConfigImpl{static_cast<size_t>(mode.id), mode.resolution.getWidth(),
-                                      mode.resolution.getHeight(), staticInfo.density,
-                                      mode.refreshRate, mode.sfVsyncOffset, mode.appVsyncOffset});
+                                      mode.resolution.getHeight(), mode.refreshRate,
+                                      mode.sfVsyncOffset, mode.appVsyncOffset});
         }
     }
 
@@ -283,12 +278,6 @@
     return NAME_NOT_FOUND;
 }
 
-float ADisplayConfig_getDensity(ADisplayConfig* config) {
-    CHECK_NOT_NULL(config);
-
-    return reinterpret_cast<DisplayConfigImpl*>(config)->density;
-}
-
 int32_t ADisplayConfig_getWidth(ADisplayConfig* config) {
     CHECK_NOT_NULL(config);