Merge pull request #773 from ethereum/yann300-patch-5

Remove uneeded `npm install`

.circleci/config.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - checkout
       - run: npm install && npm run bootstrap
-      - run: cd remix-lib && npm install && npm test
+      - run: cd remix-lib && npm test
             
   remix-core:
     docker:
@@ -22,7 +22,7 @@ jobs:
     steps:
       - checkout
       - run: npm install && npm run bootstrap
-      - run: cd remix-core && npm install && npm test
+      - run: cd remix-core && npm test
             
   remix-solidity:
     docker:
@@ -32,7 +32,7 @@ jobs:
     steps:
       - checkout
       - run: npm install && npm run bootstrap
-      - run: cd remix-solidity && npm install && npm test
+      - run: cd remix-solidity && npm test
    
   remix-debug:
      docker:
@@ -42,7 +42,7 @@ jobs:
      steps:
       - checkout
       - run: npm install && npm run bootstrap
-      - run: cd remix-debug && npm install && npm test
+      - run: cd remix-debug && npm test
              
 workflows:
   version: 2