gnulib-tool: small tweak

[Bruno Haible]

Applied this:

2007-12-09  Bruno Haible  <[EMAIL PROTECTED]>

        * gnulib-tool (func_emit_tests_Makefile_am): Remove redundant code
        introduced on 2006-09-09.

*** gnulib-tool.orig    2007-12-09 19:07:02.000000000 +0100
--- gnulib-tool 2007-12-09 18:41:23.000000000 +0100
***************
*** 1803,1813 ****
  {
    if test "$libtool" = true; then
      libext=la
-   else
-     libext=a
-   fi
-   if test "$libtool" = true; then
-     libext=la
      sed_eliminate_LDFLAGS=
    else
      libext=a
--- 1803,1808 ----
  {
    if test "$libtool" = true; then
      libext=la
      sed_eliminate_LDFLAGS=
    else
      libext=a