Fix snap build

Qt has removed support for kernels less than 4.11 by removing the -no-feature-statx flag. Remove the usage all the related flags.

snap/snapcraft.yaml

@@ -512,10 +512,6 @@ parts:
         -release \
         -opensource \
         -confirm-license \
-        -no-feature-getentropy \
-        -no-feature-renameat2 \
-        -no-feature-statx \
-        -no-feature-egl-extension-platform-wayland \
         -openssl-linked \
         -nomake examples \
         -nomake tests