Revert "fix: add libc6 to snapcraft requirements"

This reverts commit 87ddc77.

Author: gbaranski

snap/snapcraft.yaml

@@ -116,15 +116,12 @@ parts:
       - on amd64: ./bin/amd64
       - on armhf: ./bin/armhf
       - on arm64: ./bin/aarch64
-    build-packages:
-      - libc6-dev
     stage-packages:
       - wireguard-tools
       - libxml2
       - e2fsprogs
       - dbus-x11
       - libnl-genl-3-200
-      - libc6
     organize:
       nordvpn: bin/nordvpn
       nordvpnd: bin/nordvpnd
@@ -221,8 +218,7 @@ parts:
     source-type: local
     source: dist
     organize:
-      THIRD-PARTY-NOTICES.md:
-        usr/share/licenses/nordvpn/THIRD-PARTY-NOTICES.md
+      THIRD-PARTY-NOTICES.md: usr/share/licenses/nordvpn/THIRD-PARTY-NOTICES.md
         # Snap does not support manpages. In order to enable them, after installing snap, execute:
         #
         # sudo ln -s /snap/nordvpn/current/usr/share/man/man1/nordvpn.1.gz /usr/share/man/man1/nordvpn.1.gz