Removed duplicate declaration of the StringToString measure

src/main/atl/analysis.atl

@@ -1893,25 +1893,6 @@ rule MesureShortVariableName(variable : java!VariableDeclaration) {
 	}
 }
 
---- Creates a new Measure when the method toString() is unnecessarily invoked.
-rule MeasureStringToString(method : java!MethodInvocation) {
-	to
-		om: smm!ObservedMeasure (
-			measure <- noc,
-			measurements <- measurement
-		),
-		noc: smm!DimensionalMeasure (
-			name <- 'StringToString',
-			shortDescription <- 'Avoid calling toString() on objects already known to be string instances; this is unnecessary.'
-		),
-		measurement: smm!DirectMeasurement (
-			error <- 'The Object ' + method.expression.variable.name + ' is already a String in ' + method.originalCompilationUnit.name
-		)
-	do {
-		noc; 
-	}
-}
-
 --- A Measure instance if the class violates the rule 'TooManyFields'.
 -- #FIXME: Typo
 rule MesureTooManyFields(class : java!ClassDeclaration) {