Update ir.c

Author: makslevental

mlir/test/CAPI/ir.c

@@ -2445,19 +2445,15 @@ int testBlockPredecessorsSuccessors(MlirContext ctx) {
   fprintf(stderr, "@testBlockPredecessorsSuccessors\n");
 
   const char *moduleString = R"""(
-    #loc2 = loc("arg1")
-    #loc3 = loc("middle")
-    #loc4 = loc("successor")
     module {
-      func.func @test(%arg0: i32 loc("arg0"), %arg1: i16 loc("arg1")) {
-        cf.br ^bb1(%arg1 : i16) loc(#loc)
-      ^bb1(%0: i16 loc("middle")):  // pred: ^bb0
-        cf.br ^bb2(%arg0 : i32) loc(#loc)
-      ^bb2(%1: i32 loc("successor")):  // pred: ^bb1
-        return loc(#loc)
-      } loc(#loc)
-    } loc(#loc)
-    #loc = loc(unknown)
+      func.func @test(%arg0: i32, %arg1: i16) {
+        cf.br ^bb1(%arg1 : i16)
+      ^bb1(%0: i16):  // pred: ^bb0
+        cf.br ^bb2(%arg0 : i32)
+      ^bb2(%1: i32):  // pred: ^bb1
+        return
+      }
+    }
   )""";
 
   MlirModule module =