PR modula2/109388 clang warnings related to Modula-2

This patch removes an unused parameter 'module' from
DoVariableDeclaration in M2GCCDeclare.mod.  It also removes unused
procedures from PHBuild.bnf.

gcc/m2/ChangeLog:

	PR modula2/109388
	* gm2-compiler/M2GCCDeclare.mod (DoVariableDeclaration):
	Remove second parameter module.  Adjust all callers to
	remove the second parameter.
	* gm2-compiler/PHBuild.bnf (CheckAndInsert): Remove.
	(InStopSet): Remove.
	(PeepToken): Remove.
	(PushQualident): Remove.
	(SimpleDes): Remove.
	(ActualParameters): Remove.

Signed-off-by: Gaius Mulley <gaiusmod2@gmail.com>