uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/python-modules/pdftotext/default.nix

@@ -0,0 +1,20 @@
+{ lib, buildPythonPackage, fetchPypi, poppler }:
+
+buildPythonPackage rec {
+  pname = "pdftotext";
+  version = "2.2.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2a9aa89bc62022408781b39d188fabf5a3ad1103b6630f32c4e27e395f7966ee";
+  };
+
+  buildInputs = [ poppler ];
+
+  meta = with lib; {
+    description = "Simple PDF text extraction";
+    homepage = "https://github.com/jalan/pdftotext";
+    license = licenses.mit;
+    maintainers = with maintainers; [ earvstedt ];
+  };
+}