Remove angular-websocket dependency

The WebUI does not use angular-websocket for websockets instead
uses https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/WebSocket
https://github.com/openbmc/phosphor-webui/blob/457ca04073ff10cb1df2e7c5ab5192430a2ac6a9/app/common/directives/serial-console.js#L38

This unused dependency was found with depcheck.

Tested: Built this code and loaded it onto a Witherspoon.
        Still see the SOL console.
Change-Id: Iffc1f31f94ae0ff5bf7173d06208b1c7bef6ca2a
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/package-lock.json b/package-lock.json
index 744f06a..2d9d31b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1114,15 +1114,6 @@
         "@uirouter/core": "5.0.21"
       }
     },
-    "angular-websocket": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/angular-websocket/-/angular-websocket-2.0.1.tgz",
-      "integrity": "sha1-D7TWDtkBi+WD0DHuxOVrRXy43O4=",
-      "requires": {
-        "angular": "1.7.7",
-        "ws": "1.1.5"
-      }
-    },
     "ansi-colors": {
       "version": "3.2.3",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-3.2.3.tgz",
@@ -6490,11 +6481,6 @@
         "is-wsl": "1.1.0"
       }
     },
-    "options": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/options/-/options-0.0.6.tgz",
-      "integrity": "sha1-7CLTEoBrtT5zF3Pnza788cZDEo8="
-    },
     "original": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/original/-/original-1.0.2.tgz",
@@ -8969,11 +8955,6 @@
         }
       }
     },
-    "ultron": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.0.2.tgz",
-      "integrity": "sha1-rOEWq1V80Zc4ak6I9GhTeMiy5Po="
-    },
     "unicode-canonical-property-names-ecmascript": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-1.0.4.tgz",
@@ -9910,15 +9891,6 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
-    "ws": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-1.1.5.tgz",
-      "integrity": "sha512-o3KqipXNUdS7wpQzBHSe180lBGO60SoK0yVo3CYJgb2MkobuWuBX6dhkYP5ORCLd55y+SaflMOV5fqAB53ux4w==",
-      "requires": {
-        "options": "0.0.6",
-        "ultron": "1.0.2"
-      }
-    },
     "xregexp": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
diff --git a/package.json b/package.json
index 93126fe..35c6b78 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,6 @@
     "angular-sanitize": "^1.7.5",
     "angular-ui-bootstrap": "^2.5.0",
     "angular-ui-router": "^1.0.20",
-    "angular-websocket": "^2.0.1",
     "bootstrap": "^4.3.1",
     "ng-toast": "^2.0.0",
     "xterm": "^3.10.1"