remove 3rd parameter from qtPrepareTool()

it's been superseded by the QTTOOL.* module stuff.

Change-Id: I01c9fc3ebbb22111bfb03f82693c7cf08b5fc9d4
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

mkspecs/features/qt_functions.prf

@@ -166,12 +166,7 @@ defineTest(qtAddModules) {
 defineTest(qtPrepareTool) {
     $$1 = $$eval(QT_TOOL.$${2}.command)
     isEmpty($$1) {
-        MODBASE = $$[QT_HOST_BINS/get]
-        count(ARGS, 2, greaterThan) {
-            isEmpty(QT.$${3}.bins):warning("No QT.$${3}.bins, module path ignored for qtPrepareTool($$1, $$2, $$3)")
-            else:MODBASE = $$eval(QT.$${3}.bins)
-        }
-        isEmpty($$1):$$1 = $$MODBASE/$$2
+        $$1 = $$[QT_HOST_BINS/get]/$$2
         contains(QMAKE_HOST.os, Windows):!contains($$1, .*\\.(exe|bat)$) {
             exists($$eval($$1).bat) {
                 $$1 = $$eval($$1).bat

mkspecs/features/win32/qaxserver.prf

@@ -9,7 +9,7 @@ isEmpty(ACTIVEQT_VERSION):ACTIVEQT_VERSION = 1.0
 DEFINES += QAXSERVER
 INCLUDEPATH += $$QT.activeqt.includes
 
-qtPrepareTool(QMAKE_IDC, idc, activeqt)
+qtPrepareTool(QMAKE_IDC, idc)
 contains(TEMPLATE, "vc.*") {
     ACTIVEQT_IDC = $${QMAKE_IDC}
     ACTIVEQT_IDL = $${QMAKE_IDL}