[Android.bp] Remove duplicate source entry in filegroup

Remove the duplicate entry of "hwc3/DrmHwcThree.cpp" from the filegroup
{ name: "drm_hwcomposer_hwc3" }. This fixes the following Android build
error:

```
FAILED: ninja: out/soong/build.ninja:4521392: multiple rules generate
out/soong/.intermediates/external/drm_hwcomposer/
android.hardware.composer.hwc3-service.drm/
android_vendor.34_arm64_armv8-a_cortex-a53/obj/external/drm_hwcomposer/
hwc3/DrmHwcThree.o [-w dupbuild=err]
```

Signed-off-by: Mykhailo Androsiuk <mykhailo_androsiuk@epam.com>
diff --git a/Android.bp b/Android.bp
index 5620503..2d9b7ef 100644
--- a/Android.bp
+++ b/Android.bp
@@ -110,7 +110,6 @@
         "hwc3/ComposerResources.cpp",
         "hwc3/DrmHwcThree.cpp",
         "hwc3/Utils.cpp",
-        "hwc3/DrmHwcThree.cpp",
     ],
 }
 
@@ -165,10 +164,10 @@
     name: "android.hardware.composer.hwc3-service.drm",
 
     srcs: [
-      ":drm_hwcomposer_hwc3",
-      ":drm_hwcomposer_service",
-      ":drm_hwcomposer_common",
-      "bufferinfo/legacy/BufferInfoLibdrm.cpp",
+        ":drm_hwcomposer_hwc3",
+        ":drm_hwcomposer_service",
+        ":drm_hwcomposer_common",
+        "bufferinfo/legacy/BufferInfoLibdrm.cpp",
     ],
 
     defaults: [