pathplan: don't override library name in .def file

Similarly as reported in
https://gitlab.com/graphviz/graphviz/-/issues/2156, the export name
override breaks the MinGW and Cygwin autotools builds. By not
specifying the export name, each toolchain should use its appropriate
default, which should at least work, even if it's not consistent
across toolchains.

Thanks @Keno.

diff --git a/lib/pathplan/pathplan.def b/lib/pathplan/pathplan.def
index ca7922e837c4457c616ccf13202b1ed9e7dba9ca..a116ace714ee0c70621ea847de29bb41faf14eca 100644 (file)
--- a/lib/pathplan/pathplan.def
+++ b/lib/pathplan/pathplan.def
@@ -1,6 +1,3 @@
-LIBRARY        "Pathplan"
-
-
 EXPORTS
 area2
 directVis