Dataflow: Make use of defaults for language-specific hooks.

ruby/ql/lib/codeql/ruby/dataflow/internal/DataFlowDispatch.qll

@@ -1456,13 +1456,3 @@ predicate parameterMatch(ParameterPosition ppos, ArgumentPosition apos) {
   or
   apos.isAnyNamed() and ppos.isKeyword(_)
 }
-
-/**
- * Holds if flow from `call`'s argument `arg` to parameter `p` is permissible.
- *
- * This is a temporary hook to support technical debt in the Go language; do not use.
- */
-pragma[inline]
-predicate golangSpecificParamArgFilter(DataFlowCall call, ParameterNodeImpl p, ArgumentNode arg) {
-  any()
-}

ruby/ql/lib/codeql/ruby/dataflow/internal/DataFlowPrivate.qll

@@ -1972,12 +1972,3 @@ class AdditionalJumpStep extends Unit {
    */
   abstract predicate step(Node pred, Node succ);
 }
-
-/**
- * Gets an additional term that is added to the `join` and `branch` computations to reflect
- * an additional forward or backwards branching factor that is not taken into account
- * when calculating the (virtual) dispatch cost.
- *
- * Argument `arg` is part of a path from a source to a sink, and `p` is the target parameter.
- */
-int getAdditionalFlowIntoCallNodeTerm(ArgumentNode arg, ParameterNodeImpl p) { none() }