Remove unnecessary mockito dependency in micrometer-test

[shakuzen]

We declare an api dependency on mockito-core but it is unused in the micrometer-test module. We should be able to remove this unused dependency.

micrometer/micrometer-test/build.gradle

Line 45 in 73f8879

api 'org.mockito:mockito-core'

Some of our other modules were depending on the mockito dependency being pulled in via micrometer-test, but that should not have been the case. If a module uses mockito in its own test code, it should declare a test dependency on mockito.