targets.json: remove IAR configs

Some targets have `c_lib` set to `small` but their `supported_c_libs`
only permits `std` for IAR. This causes failures in some CI runs.
As IAR is not supported anymore, simply remove them from configs.

Author: LDong-Arm

targets/targets.json

@@ -24,9 +24,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "supported_application_profiles": [
@@ -268,9 +265,6 @@
             ],
             "gcc_arm": [
                 "std", "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "c_lib": "small",
@@ -365,9 +359,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "extra_labels": [
@@ -781,9 +772,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "supported_application_profiles": [
@@ -1032,9 +1020,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         }
     },
@@ -1119,9 +1104,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "supported_application_profiles": [
@@ -5026,9 +5008,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         }
     },
@@ -5123,9 +5102,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         }
     },
@@ -5222,9 +5198,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         }
     },
@@ -6027,9 +6000,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "c_lib": "small",
@@ -6135,9 +6105,6 @@
             "gcc_arm": [
                 "std",
                 "small"
-            ],
-            "iar": [
-                "std"
             ]
         },
         "c_lib": "small",