Do not check script discovery file extension

it is optional (so far), so this check was incorrect.
#KT-44117 fixed

idea/src/org/jetbrains/kotlin/idea/script/ScriptTemplatesClassRootsIndex.kt

@@ -50,6 +50,5 @@ class ScriptTemplatesClassRootsIndex :
         val parent = file.parent ?: return false
         return parent.isDirectory
                 && parent.path.endsWith(suffix)
-                && file.path.endsWith(SCRIPT_DEFINITION_MARKERS_EXTENSION_WITH_DOT)
     }
 }