Disable glog on AppVeyor

ci/appveyor-cpp-build-mingw.bat

@@ -47,6 +47,7 @@ cmake ^
     -DARROW_VERBOSE_THIRDPARTY_BUILD=OFF ^
     -DARROW_PACKAGE_PREFIX=%MINGW_PREFIX% ^
     -DARROW_JEMALLOC=OFF ^
+    -DARROW_USE_GLOG=OFF ^
     -DARROW_PARQUET=ON ^
     -DARROW_PYTHON=ON ^
     -DPythonInterp_FIND_VERSION=ON ^

ci/appveyor-cpp-setup-mingw.bat

@@ -32,7 +32,6 @@ pacman --sync --refresh --noconfirm ^
     "%MINGW_PACKAGE_PREFIX%-double-conversion" ^
     "%MINGW_PACKAGE_PREFIX%-flatbuffers" ^
     "%MINGW_PACKAGE_PREFIX%-gflags" ^
-    "%MINGW_PACKAGE_PREFIX%-glog" ^
     "%MINGW_PACKAGE_PREFIX%-gobject-introspection" ^
     "%MINGW_PACKAGE_PREFIX%-gtest" ^
     "%MINGW_PACKAGE_PREFIX%-gtk-doc" ^