Remove Khronos OpenXR patch

We needed that patch because the upstream version was not properly
building with -Werror because there were some warnings in the
compilation. As we have upgraded the SDK to 1.0.31 we don't need
the patch anymore.

app/CMakeLists.txt

@@ -213,20 +213,7 @@ if (AOSP)
     set(lib_build_DIR ${CMAKE_SOURCE_DIR}/../third_party/OpenXR-SDK/build)
     file(MAKE_DIRECTORY ${lib_build_DIR})
 
-    # We use the ExternalProject utility just to patch OpenXR-SDK, we don't use it for anything else
-    # TODO: unapply the patch. As we don't use it for building we cannot currently use _Add_Step
-    # to specify a cleanup step depending on the build step.
-    include(ExternalProject)
-    ExternalProject_Add(EXTOpenXRLoader
-            SOURCE_DIR ${lib_src_DIR}
-            BINARY_DIR ${lib_build_DIR}
-            PATCH_COMMAND git reset --hard && git apply ${CMAKE_SOURCE_DIR}/../third_party/patches/0001-Fix-some-missing-field-initializer-warnings.patch
-            STEP_TARGETS patch
-            EXCLUDE_FROM_ALL TRUE
-            )
-
     add_subdirectory(${lib_src_DIR} ${lib_build_DIR})
-    add_dependencies(openxr_loader EXTOpenXRLoader-patch)
     target_link_libraries(native-lib openxr_loader)
 endif()
 

third_party_hash

@@ -1 +1 @@
-6bc41b7fef724f192856f6951578084cd36b1e27
+6a75b7f13f23658b2ae09547bdf17ec51c5f996c