chore: remove unused legacy methods

pubspec.lock

@@ -1053,22 +1053,6 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
-  socket_io_client:
-    dependency: "direct main"
-    description:
-      name: socket_io_client
-      sha256: c8471c2c6843cf308a5532ff653f2bcdb7fa9ae79d84d1179920578a06624f0d
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.1.2"
-  socket_io_common:
-    dependency: transitive
-    description:
-      name: socket_io_common
-      sha256: "162fbaecbf4bf9a9372a62a341b3550b51dcef2f02f3e5830a297fd48203d45b"
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.1.1"
   source_gen:
     dependency: transitive
     description:
@@ -1141,14 +1125,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.4.0"
-  sse:
-    dependency: "direct main"
-    description:
-      name: sse
-      sha256: fcc97470240bb37377f298e2bd816f09fd7216c07928641c0560719f50603643
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.1.8"
   stack_trace:
     dependency: transitive
     description:
@@ -1398,7 +1374,7 @@ packages:
     source: hosted
     version: "1.0.1"
   web_socket_channel:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: web_socket_channel
       sha256: d645757fb0f4773d602444000a8131ff5d48c9e47adfe9772652dd1a4f2d45c8