treewide: remove static packages

Nixpkgs is meant to link everything dynamically. We don’t want to
expose static packages at the top level. If some package needs
statically built binaries, it should use a custom override.

pkgs/tools/system/proot/default.nix

@@ -1,6 +1,5 @@
 { stdenv, fetchFromGitHub, fetchpatch
-, talloc, docutils
-, enableStatic ? true }:
+, talloc, docutils }:
 
 ({ version, rev, sha256, patches }: stdenv.mkDerivation {
   name = "proot-${version}";
@@ -12,17 +11,13 @@
     owner = "cedric-vincent";
   };
 
-  buildInputs = [ talloc ] ++ stdenv.lib.optional enableStatic stdenv.cc.libc.static;
+  buildInputs = [ talloc ];
   nativeBuildInputs = [ docutils ];
 
   enableParallelBuilding = true;
 
   inherit patches;
 
-  preBuild = stdenv.lib.optionalString enableStatic ''
-    export LDFLAGS="-static"
-  '';
-
   makeFlags = [ "-C src" ];
 
   postBuild = ''