diff --git a/ext/libpqxx-7.7.3/INSTALL b/ext/libpqxx-7.7.3/INSTALL
deleted file mode 100644
index 1c03a1c3..00000000
--- a/ext/libpqxx-7.7.3/INSTALL
+++ /dev/null
@@ -1,2 +0,0 @@
-For installation instructions, see `BUILDING-configure.md` (for the `configure`
-build) and `BUILDING-cmake.md` (for the CMake build).