Remove FIXME comment from fixed issue in Android Export

(cherry picked from commit 68b1a80a5df8ad4fb94ad96561d989ec2accce58)

platform/android/export/export.cpp

@@ -1013,8 +1013,6 @@ class EditorExportPlatformAndroid : public EditorExportPlatform {
 							encode_uint32(min_gles3 ? 0x00030000 : 0x00020000, &p_manifest.write[iofs + 16]);
 						}
 
-						// FIXME: `attr_value != 0xFFFFFFFF` below added as a stopgap measure for GH-32553,
-						// but the issue should be debugged further and properly addressed.
 						if (tname == "meta-data" && attrname == "name" && value == "xr_mode_metadata_name") {
 							// Update the meta-data 'android:name' attribute based on the selected XR mode.
 							if (xr_mode_index == 1 /* XRMode.OVR */) {