Remove redundant entries from `yarn.lock`

For some reason, Yarn left these redundant entries in the lockfile
after merging `develop` into `master`.

yarn.lock

@@ -10098,13 +10098,6 @@ eth-json-rpc-errors@^2.0.1, eth-json-rpc-errors@^2.0.2:
   dependencies:
     fast-safe-stringify "^2.0.6"
 
-eth-json-rpc-errors@^2.0.1:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/eth-json-rpc-errors/-/eth-json-rpc-errors-2.0.2.tgz#c1965de0301fe941c058e928bebaba2e1285e3c4"
-  integrity sha512-uBCRM2w2ewusRHGxN8JhcuOb2RN3ueAOYH/0BhqdFmQkZx5lj5+fLKTz0mIVOzd4FG5/kUksCzCD7eTEim6gaA==
-  dependencies:
-    fast-safe-stringify "^2.0.6"
-
 eth-json-rpc-filters@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/eth-json-rpc-filters/-/eth-json-rpc-filters-4.1.1.tgz#15277c66790236d85f798f4d7dc6bab99a798cd2"
@@ -15995,16 +15988,6 @@ json-rpc-engine@^5.1.3, json-rpc-engine@^5.1.5, json-rpc-engine@^5.1.8:
     promise-to-callback "^1.0.0"
     safe-event-emitter "^1.0.1"
 
-json-rpc-engine@^5.1.5:
-  version "5.1.8"
-  resolved "https://registry.yarnpkg.com/json-rpc-engine/-/json-rpc-engine-5.1.8.tgz#5ba0147ce571899bbaa7133ffbc05317c34a3c7f"
-  integrity sha512-vTBSDEPJV1fPAsbm2g5sEuPjsgLdiab2f1CTn2PyRr8nxggUpA996PDlNQDsM0gnrA99F8KIBLq2nIKrOFl1Mg==
-  dependencies:
-    async "^2.0.1"
-    eth-json-rpc-errors "^2.0.1"
-    promise-to-callback "^1.0.0"
-    safe-event-emitter "^1.0.1"
-
 json-rpc-error@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/json-rpc-error/-/json-rpc-error-2.0.0.tgz#a7af9c202838b5e905c7250e547f1aff77258a02"