Remove unused dependencies (#1159)

* chore: Remove unused dependencies

* Edit changeset

Co-authored-by: Cole Bemis <colebemis@github.com>

.changeset/brown-monkeys-destroy.md

@@ -0,0 +1,5 @@
+---
+'@primer/components': patch
+---
+
+Removed unused dependencies

package.json

@@ -57,8 +57,6 @@
     "classnames": "^2.2.5",
     "deepmerge": "4.2.2",
     "focus-visible": "5.2.0",
-    "polished": "3.5.2",
-    "react-is": "16.10.2",
     "styled-system": "5.1.2"
   },
   "devDependencies": {

yarn.lock

@@ -1119,7 +1119,7 @@
     core-js-pure "^3.0.0"
     regenerator-runtime "^0.13.4"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.4", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.5", "@babel/runtime@^7.3.1", "@babel/runtime@^7.4.4", "@babel/runtime@^7.5.0", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.7.6", "@babel/runtime@^7.8.4", "@babel/runtime@^7.8.7", "@babel/runtime@^7.9.2":
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.10.2", "@babel/runtime@^7.10.4", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.5", "@babel/runtime@^7.3.1", "@babel/runtime@^7.4.4", "@babel/runtime@^7.5.0", "@babel/runtime@^7.5.5", "@babel/runtime@^7.7.2", "@babel/runtime@^7.7.6", "@babel/runtime@^7.8.4", "@babel/runtime@^7.9.2":
   version "7.12.18"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.12.18.tgz#af137bd7e7d9705a412b3caaf991fe6aaa97831b"
   integrity sha512-BogPQ7ciE6SYAUPtlm9tWbgI9+2AgqSam6QivMgXgAT+fKbgppaj4ZX15MHeLC1PVF5sNk70huBu20XxWOs8Cg==
@@ -11352,13 +11352,6 @@ pnp-webpack-plugin@1.6.4:
   dependencies:
     ts-pnp "^1.1.6"
 
-polished@3.5.2:
-  version "3.5.2"
-  resolved "https://registry.yarnpkg.com/polished/-/polished-3.5.2.tgz#ca132b8cd68f7ffa95ae9d423f03e7a14fda1062"
-  integrity sha512-vWoRDg3gY5RQBtUfcj9MRN10VCIf4EkdUikGxyXItg2Hnwk+eIVtdBiLajN0ldFeT3Vq4r/QNbjrQdhqBKrTug==
-  dependencies:
-    "@babel/runtime" "^7.8.7"
-
 polished@^3.4.4:
   version "3.7.1"
   resolved "https://registry.yarnpkg.com/polished/-/polished-3.7.1.tgz#d1addc87ee16eb5b413c6165eda37600cccb9c11"
@@ -11985,11 +11978,6 @@ react-inspector@^5.0.1:
     is-dom "^1.0.0"
     prop-types "^15.0.0"
 
-react-is@16.10.2:
-  version "16.10.2"
-  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.10.2.tgz#984120fd4d16800e9a738208ab1fba422d23b5ab"
-  integrity sha512-INBT1QEgtcCCgvccr5/86CfD71fw9EPmDxgiJX4I2Ddr6ZsV6iFXsuby+qWJPtmNuMY0zByTsG4468P7nHuNWA==
-
 "react-is@^16.12.0 || ^17.0.0", react-is@^17.0.1:
   version "17.0.1"
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-17.0.1.tgz#5b3531bd76a645a4c9fb6e693ed36419e3301339"