Get rid of 'ya tool ymake_python3'

build/ya.conf.json

@@ -200,14 +200,6 @@
             },
             "formula": "build/external_resources/ymake/public.resources.json"
         },
-        "ymake_python3": {
-            "executable": {
-                "python3": [
-                    "python3"
-                ]
-            },
-            "formula": "build/platform/python/ymake_python3/resources.json"
-        },
         "ytexec": {
             "executable": {
                 "ytexec": [
@@ -1290,55 +1282,6 @@
                 }
             }
         },
-        "ymake_python3": {
-            "platforms": [
-                {
-                    "default": true,
-                    "host": {
-                        "os": "LINUX"
-                    }
-                },
-                {
-                    "default": true,
-                    "host": {
-                        "os": "WIN"
-                    }
-                },
-                {
-                    "default": true,
-                    "host": {
-                        "os": "DARWIN"
-                    }
-                },
-                {
-                    "default": true,
-                    "host": {
-                        "arch": "arm64",
-                        "os": "DARWIN"
-                    }
-                },
-                {
-                    "default": true,
-                    "host": {
-                        "arch": "aarch64",
-                        "os": "LINUX"
-                    }
-                },
-                {
-                    "default": true,
-                    "host": {
-                        "arch": "ppc64le",
-                        "os": "LINUX"
-                    }
-                }
-            ],
-            "tools": {
-                "ymake_python3": {
-                    "bottle": "ymake_python3",
-                    "executable": "python3"
-                }
-            }
-        },
         "ytexec": {
             "platforms": [
                 {
@@ -1437,10 +1380,6 @@
             "description": "Run ymake",
             "visible": false
         },
-        "ymake_python3": {
-            "description": "Run pseudo-python3",
-            "visible": false
-        },
         "ytexec": {
             "description": "Run ytexec"
         }