simplify autogen by removing unneeded config run

Since the next step after running ./autogen.sh is always to run
./configure, and as the configure step may fail if certain libraries
are not present, we can simplify the build and packaging process by
not trying to run a "default" configure job at the end of autogen.sh.

Author: chrisd8088

autogen.sh

@@ -27,6 +27,5 @@ aclocal -Wall --install -I m4 &&
   libtoolize -Wall --copy &&
   autoheader -Wall &&
   autoconf -Wall &&
-  automake -Wall --add-missing --copy &&
-  ./configure "$@"
+  automake -Wall --add-missing --copy
 

docs/build-install.md

@@ -134,9 +134,7 @@ $ git clone https://github.com/github/libprojfs.git
 source code using the "Clone or download" button on this page.)
 
 Next, run the `autogen.sh` script to generate an [Autoconf][autoconf]
-`configure` script.  (If you don't have your modified libfuse in a
-system location, you may need to supply `CPPFLAGS` and `LDFLAGS`
-to `autogen.sh` too; see the next paragraph for an example.)
+`configure` script:
 ```
 $ ./autogen.sh
 ```