CI: disable LFS file downloading during regular cloning

.appveyor.yml

@@ -3,6 +3,10 @@ version: '{build}'
 # use an image with recent Mingw-w64 versions available on both architectures: https://www.appveyor.com/docs/windows-images-software/#mingw-msys-cygwin
 image: Visual Studio 2015
 
+environment:
+  # disable LFS file downloading during regular cloning
+  GIT_LFS_SKIP_SMUDGE: 1
+
 cache:
   - NimBinaries
 

.travis.yml

@@ -9,6 +9,8 @@ cache:
 git:
   # when multiple CI builds are queued, the tested commit needs to be in the last X commits cloned with "--depth X"
   depth: 10
+  # disable LFS file downloading during regular cloning
+  lfs_skip_smudge: true
 
 matrix:
   include: