tests: remove redundant requirement

* tests/txinfo19.test ($required): Drop required "tex", it is not
really needed.
Add trailing ':' command since we are at it.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/tests/txinfo19.test b/tests/txinfo19.test
index e304b42..63417f8 100755 (executable)
--- a/tests/txinfo19.test
+++ b/tests/txinfo19.test
@@ -16,7 +16,7 @@
 
 # Test support for DJGPP's .iNN info files.
 
-required='makeinfo tex'
+required=makeinfo
 . ./defs || Exit 1
 
 echo AC_OUTPUT >> configure.ac
@@ -68,3 +68,5 @@ test ! -f main.i21
 $MAKE maintainer-clean
 test ! -f main.i7
 test ! -f main.i39
+
+: