Drop unused redis dependency. We only use ioredis

Author: lukemelia

package.json

@@ -21,7 +21,6 @@
     "core-object": "^3.1.5",
     "ember-cli-deploy-plugin": "^0.2.9",
     "ioredis": "^3.2.2",
-    "redis": "^2.6.3",
     "rsvp": "^4.8.5"
   },
   "devDependencies": {

yarn.lock

@@ -2205,11 +2205,6 @@ dot-prop@^5.2.0:
   dependencies:
     is-obj "^2.0.0"
 
-double-ended-queue@^2.1.0-0:
-  version "2.1.0-0"
-  resolved "https://registry.yarnpkg.com/double-ended-queue/-/double-ended-queue-2.1.0-0.tgz#103d3527fd31528f40188130c841efdd78264e5c"
-  integrity sha1-ED01J/0xUo9AGIEwyEHv3XgmTlw=
-
 duplexer3@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/duplexer3/-/duplexer3-0.1.4.tgz#ee01dd1cac0ed3cbc7fdbea37dc0a8f1ce002ce2"
@@ -6089,20 +6084,11 @@ redis-commands@^1.2.0:
   resolved "https://registry.yarnpkg.com/redis-commands/-/redis-commands-1.5.0.tgz#80d2e20698fe688f227127ff9e5164a7dd17e785"
   integrity sha512-6KxamqpZ468MeQC3bkWmCB1fp56XL64D4Kf0zJSwDZbVLLm7KFkoIcHrgRvQ+sk8dnhySs7+yBg94yIkAK7aJg==
 
-redis-parser@^2.4.0, redis-parser@^2.6.0:
+redis-parser@^2.4.0:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/redis-parser/-/redis-parser-2.6.0.tgz#52ed09dacac108f1a631c07e9b69941e7a19504b"
   integrity sha1-Uu0J2srBCPGmMcB+m2mUHnoZUEs=
 
-redis@^2.6.3:
-  version "2.8.0"
-  resolved "https://registry.yarnpkg.com/redis/-/redis-2.8.0.tgz#202288e3f58c49f6079d97af7a10e1303ae14b02"
-  integrity sha512-M1OkonEQwtRmZv4tEWF2VgpG0JWJ8Fv1PhlgT5+B+uNq2cA3Rt1Yt/ryoR+vQNOQcIEgdCdfH0jr3bDpihAw1A==
-  dependencies:
-    double-ended-queue "^2.1.0-0"
-    redis-commands "^1.2.0"
-    redis-parser "^2.6.0"
-
 regenerator-runtime@^0.13.4:
   version "0.13.5"
   resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.5.tgz#d878a1d094b4306d10b9096484b33ebd55e26697"