Rm unnecessary mkdir in Circle config (#2692)

See discussion in badges/daily-tests#4.

.circleci/config.yml

@@ -44,11 +44,6 @@ jobs:
           when: always
           command: npm run lint
 
-      - run:
-          name: Prepare test summary
-          when: always
-          command: mkdir junit
-
       - run:
           name: Server unit tests
           when: always
@@ -103,11 +98,6 @@ jobs:
           when: always
           command: npm run lint
 
-      - run:
-          name: Prepare test summary
-          when: always
-          command: mkdir junit
-
       - run:
           name: Server unit tests
           when: always
@@ -181,11 +171,6 @@ jobs:
           name: Prepare frontend tests
           command: npm run defs && npm run features
 
-      - run:
-          name: Prepare test summary
-          when: always
-          command: mkdir junit
-
       - run:
           name: Frontend unit tests
           environment:
@@ -221,11 +206,6 @@ jobs:
           name: Identify services tagged in the PR title
           command: npm run test:services:pr:prepare
 
-      - run:
-          name: Prepare test summary
-          when: always
-          command: mkdir junit
-
       - run:
           name: Run tests for tagged services
           environment:
@@ -256,11 +236,6 @@ jobs:
           name: Identify services tagged in the PR title
           command: npm run test:services:pr:prepare
 
-      - run:
-          name: Prepare test summary
-          when: always
-          command: mkdir junit
-
       - run:
           name: Run tests for tagged services
           environment: