Get rid of .htaccess now that we're using nginx

frontend/angular.json

@@ -24,8 +24,7 @@
             "tsConfig": "src/tsconfig.app.json",
             "assets": [
               "src/favicon.ico",
-              "src/assets",
-              "src/.htaccess"
+              "src/assets"
             ],
             "styles": [
               "src/styles.scss"
@@ -124,4 +123,4 @@
     }
   },
   "defaultProject": "mempool"
-}
+}

frontend/src/.htaccess

@@ -1,7 +0,0 @@
-RewriteEngine on
-RewriteCond %{REQUEST_FILENAME} -s [OR]
-RewriteCond %{REQUEST_FILENAME} -l [OR]
-RewriteCond %{REQUEST_FILENAME} -d
-RewriteRule ^.*$ - [NC,L]
-
-RewriteRule ^(.*) /index.html [NC,L]