Revert of Add vulkan files into skia repo.

tools/generate_vk_interface.sh

-# Copyright 2015 Google Inc. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-headerLoc=../third_party/vulkan/vulkan.h
-outFile=tempVkInterface
-
-if [ ! -e "$outFile" ] ; then
-    echo 'I AM HERE'
-    touch "$outFile"
-fi
-
-chmod 700 $outFile
-
-echo '// *******************************************' > $outFile
-echo '// Place these lines into GrVkInterface.cpp::validate' >> $outFile
-echo '// *******************************************' >> $outFile
-sed -n 's/^VKAPI_ATTR \(VkResult\|void\) VKAPI_CALL vk\([a-zA-Z]*\).*/NULL == fFunctions.f\2 ||/p' $headerLoc >> $outFile
-sed -i '1,/NULL/ s/^NULL/if (NULL/' $outFile
-sed -i '5,$ s/^/    /' $outFile
-sed -i '$ s/ ||/) {/' $outFile
-
-echo '' >> $outFile
-echo '// *******************************************' >> $outFile
-echo '// Place these lines into GrVkInterface.h' >> $outFile
-echo '// *******************************************' >> $outFile
-sed -n 's/^VKAPI_ATTR \(VkResult\|void\) VKAPI_CALL vk\([a-zA-Z]*\).*/VkPtr<PFN_vk\2> f\2;/p' $headerLoc >> $outFile
-
-echo '' >> $outFile
-echo '// *******************************************' >> $outFile
-echo '// Place these lines into GrVkInterface.cpp::GrVKCreateInterface' >> $outFile
-echo '// *******************************************' >> $outFile
-sed -n 's/^VKAPI_ATTR \(VkResult\|void\) VKAPI_CALL vk\([a-zA-Z]*\).*/GET_PROC(\2);/p' $headerLoc >> $outFile
-