Allow users to use MathNotation

MachineArithmetic-MachineArithmetic is the highest level within
MachineArithmetic that can work without MathNotation.  Refinements
and above (Sprite etc) definitely use it all over the place.

pharo/check-deps.st

@@ -26,7 +26,6 @@ cycleDetector cycles do:[:cycle|
    i)   PreSmalltalks has no dependencies within MA except 'PreSmalltalks-Pharo'
    ii)  MachineArithmetic has no dependencies within MA except 'PreSmalltalks' and its
         dependencies
-   iii) Nothing depends on MachineArithmetic-MathNotation except its tests.
 "
 depChecker := DADependencyChecker new.
 visited := Set new.
@@ -46,19 +45,6 @@ unwanted notEmpty ifTrue:[
 	Transcript show: 'ERROR: Unwanted dependencies of MachineArithmetic: '; show: unwanted printString; cr.
 ].
 
-"iii)"
-packages do:[:package |
-    (package beginsWith: 'MachineArithmetic-MathNotation') ifFalse:[
-    	| deps |
-    	deps := packages & (depChecker dependenciesOf: package).
-    	Transcript show: package -> deps; cr.
-		(deps includes: 'MachineArithmetic-MathNotation') ifTrue:[
-			error := true.
-			Transcript show: 'ERROR: Unwanted dependency of ', package , ': MachineArithmetic-MathNotation'; cr.
-		].
-	].
-].
-
 
 "
 4. Show help and exit (with proper error code)
@@ -77,4 +63,4 @@ ERROR: Some package(s) has dependency issues, see ERROR: messages above!!
 '.
     Smalltalk exit: 1.
 ].
-Smalltalk exit: 0
+Smalltalk exit: 0