Remove now-unused create-react-class from lockfile

yarn.lock

@@ -2898,15 +2898,6 @@ crc-32@^0.3.0:
   resolved "https://registry.yarnpkg.com/crc-32/-/crc-32-0.3.0.tgz#6a3d3687f5baec41f7e9b99fe1953a2e5d19775e"
   integrity sha1-aj02h/W67EH36bmf4ZU6Ll0Zd14=
 
-create-react-class@^15.6.3:
-  version "15.6.3"
-  resolved "https://registry.yarnpkg.com/create-react-class/-/create-react-class-15.6.3.tgz#2d73237fb3f970ae6ebe011a9e66f46dbca80036"
-  integrity sha512-M+/3Q6E6DLO6Yx3OwrWjwHBnvfXXYA7W+dFjt/ZDBemHO1DDZhsalX/NUtnTYclN6GfnBDRh4qRHjcDHmlJBJg==
-  dependencies:
-    fbjs "^0.8.9"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 cross-spawn@^6.0.0, cross-spawn@^6.0.5:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
@@ -3988,7 +3979,7 @@ fbjs@0.1.0-alpha.7:
     promise "^7.0.3"
     whatwg-fetch "^0.9.0"
 
-fbjs@^0.8.4, fbjs@^0.8.9:
+fbjs@^0.8.4:
   version "0.8.17"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.17.tgz#c4d598ead6949112653d6588b01a5cdcd9f90fdd"
   integrity sha1-xNWY6taUkRJlPWWIsBpc3Nn5D90=
@@ -5841,7 +5832,7 @@ longest-streak@^2.0.1:
   resolved "https://registry.yarnpkg.com/longest-streak/-/longest-streak-2.0.4.tgz#b8599957da5b5dab64dee3fe316fa774597d90e4"
   integrity sha512-vM6rUVCVUJJt33bnmHiZEvr7wPT78ztX7rojL+LW51bHtLh6HTjx84LA5W4+oa6aKEJA7jJu5LR6vQRBpA5DVg==
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1, loose-envify@^1.4.0:
+loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
   integrity sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==