Property initializers from primary constructor parameters

are generated as property initializer expressions
and should not be repeated in primary constructor.

compiler/testData/ir/irText/expressions/complexAugmentedAssignment.txt

@@ -92,9 +92,6 @@ FILE /complexAugmentedAssignment.kt
         CONST Int type=kotlin.Int value='0'
       BLOCK_BODY
         DELEGATING_CONSTRUCTOR_CALL 'constructor Any()'
-        SET_BACKING_FIELD 's: Int' type=kotlin.Unit operator=null
-          receiver: THIS of 'B' type=B
-          value: GET_VAR 'value-parameter s: Int = ...' type=kotlin.Int operator=INITIALIZE_PROPERTY_FROM_PARAMETER
         INSTANCE_INITIALIZER_CALL classDescriptor='B'
     PROPERTY public final var s: kotlin.Int
       EXPRESSION_BODY