testapi: Now that relative modules work in a nearly unified manner on all...

testapi: Now that relative modules work in a nearly unified manner on all platform, no need to put that much plugin path.

src/control/testapi.c

@@ -274,7 +274,7 @@ int main (int argc, char *argv[])
     args[0] = "-vvv";
     args[1] = "-I";
     args[2] = "dummy";
-    args[3] = "--plugin-path=../modules:../../modules";
+    args[3] = "--plugin-path=../modules";
     args[4] = "--vout=dummy";
     args[5] = "--aout=dummy";
     for (int i = 1; i < argc; i++)