Remove unused methods
Remove identity transformation
Remove unused experimentalSyntaxEnabled field
Remove getter/predicate functions from ParameterizedType
Remove predicate function from AggregationAnalyzer
Remove predicate function from TaskState
Remove predicate function from QueryState
Remove predicate function from QueryStateMachine
Remove predicate function from TupleDescriptor
Remove predicate function from DeterminismEvaluator
Remove predicate function from ExpressionInterpreter
Remove getter function from ConstantByteCodeExpression
Remove constructor function from CreateViewTask
Remove constructor function from Split
Remove transformer function from TableScanNode
Remove constructor function from QueryPlanner
Remove transformer function from CanonicalizeExpression
Remove transformer function from SimplifyExpression
Remove transformer function from UnaliasSymbolReferences
Remove transformer function from ExpressionUtils