drop unneeded config file, simplify naming of build commands

see https://github.com/openstreetmap/iD/issues/8811#issuecomment-1031379116

babel.config.json

@@ -1,22 +0,0 @@
-{
-  "presets": [
-    [
-      "@babel/preset-env", {
-        "useBuiltIns": "entry",
-        "corejs": 3,
-        "modules": false,
-        "targets": {
-          "chrome": "58",
-          "ie": 11
-        }
-      }
-    ]
-  ],
-  "plugins": [
-    "inline-json-import",
-    ["@babel/transform-runtime", {
-      "regenerator": true
-    }]
-  ],
-  "compact": false
-}

package.json

@@ -13,17 +13,17 @@
   "license": "ISC",
   "scripts": {
     "all": "run-s clean build dist",
-    "build": "run-s build:css build:data build:modern",
+    "build": "run-s build:css build:data build:js",
     "build:css": "node scripts/build_css.js",
     "build:data": "shx mkdir -p dist/data && node scripts/build_data.js",
     "build:stats": "esbuild-visualizer --metadata dist/esbuild.json --exclude *.png --filename docs/statistics.html",
-    "build:modern": "node config/esbuild.config.modern.mjs",
-    "build:modern:watch": "node config/esbuild.config.modern.mjs --watch",
+    "build:js": "node config/esbuild.config.mjs",
+    "build:js:watch": "node config/esbuild.config.mjs --watch",
     "clean": "shx rm -f dist/esbuild.json dist/*.js dist/*.map dist/*.css dist/img/*.svg",
     "dist": "run-p dist:**",
     "dist:mapillary": "shx mkdir -p dist/mapillary-js && shx cp -R node_modules/mapillary-js/dist/* dist/mapillary-js/",
     "dist:pannellum": "shx mkdir -p dist/pannellum-streetside && shx cp -R node_modules/pannellum/build/* dist/pannellum-streetside/",
-    "dist:min:modern": "node config/esbuild.config.modern-min.mjs",
+    "dist:min": "node config/esbuild.config.min.mjs",
     "dist:svg:iD": "svg-sprite --symbol --symbol-dest . --shape-id-generator \"iD-%s\" --symbol-sprite dist/img/iD-sprite.svg \"svg/iD-sprite/**/*.svg\"",
     "dist:svg:community": "svg-sprite --symbol --symbol-dest . --shape-id-generator \"community-%s\" --symbol-sprite dist/img/community-sprite.svg node_modules/osm-community-index/dist/img/*.svg",
     "dist:svg:fa": "svg-sprite --symbol --symbol-dest . --symbol-sprite dist/img/fa-sprite.svg svg/fontawesome/*.svg",
@@ -34,8 +34,8 @@
     "imagery": "node scripts/update_imagery.js",
     "lint": "eslint scripts test/spec modules",
     "lint:fix": "eslint scripts test/spec modules --fix",
-    "start": "run-s build:modern start:server",
-    "start:watch": "run-p build:modern:watch start:server",
+    "start": "run-s build:js start:server",
+    "start:watch": "run-p build:js:watch start:server",
     "start:server": "node scripts/server.js",
     "test": "npm-run-all -s lint build test:spec",
     "test:spec": "karma start karma.conf.js",