iar: remove nxp duplicate definitions

Fixes #7634

Author: 0xc0170

tools/export/iar/iar_definitions.json

@@ -154,9 +154,6 @@
         "FPU2": 7,
         "NrRegs": 1
     },
-    "MKL43Z256xxx4": {
-        "OGChipSelectEditMenu": "MKL43Z256xxx4\tFreescale MKL43Z256xxx4"
-    },
     "LPC812M101JDH20": {
         "OGChipSelectEditMenu": "LPC812M101\tNXP LPC812M101"
     },
@@ -185,9 +182,6 @@
     "STM32F446ZE": {
         "OGChipSelectEditMenu": "STM32F446ZE\tST STM32F446ZE"
     },
-    "MK22DN512xxx5": {
-        "OGChipSelectEditMenu": "MK22FN512xxx12\tFreescale MK22FN512xxx12"
-    },
     "STM32F303K8": {
         "OGChipSelectEditMenu": "STM32F303x8\tST STM32F303x8"
     },