The mockito error-prone library is no longer included by default

It has produced a substantially highter maintenance burden than
we're willing to accept, impacting the error_prone version used
in consumers before we're ready to adopt releases. For example,
google/error-prone#3225 results in
build failures when 2.14.0 is adopted.

baseline-error-prone/build.gradle

@@ -7,7 +7,6 @@ dependencies {
     implementation 'com.google.errorprone:error_prone_core'
     // Ensure a new enough version of dataflow-errorprone is available
     implementation 'org.checkerframework:dataflow-errorprone'
-    runtimeOnly 'org.mockito:mockito-errorprone'
 
     testImplementation gradleApi()
     testImplementation 'com.palantir.tokens:auth-tokens'
@@ -70,4 +69,4 @@ moduleJvmArgs {
         'jdk.compiler/com.sun.tools.javac.util'
     ]
     opens = ['jdk.compiler/com.sun.tools.javac.comp']
-}
+}

versions.lock

@@ -17,7 +17,7 @@ com.google.code.findbugs:jsr305:3.0.2 (6 constraints: 66626968)
 com.google.errorprone:error_prone_annotation:2.13.1 (3 constraints: c138e9ec)
 com.google.errorprone:error_prone_annotations:2.13.1 (12 constraints: 82bdf88c)
 com.google.errorprone:error_prone_check_api:2.13.1 (2 constraints: b025d4fe)
-com.google.errorprone:error_prone_core:2.13.1 (3 constraints: f4251b64)
+com.google.errorprone:error_prone_core:2.13.1 (2 constraints: 0f189366)
 com.google.errorprone:error_prone_refaster:2.13.1 (1 constraints: 3905393b)
 com.google.errorprone:error_prone_test_helpers:2.13.1 (1 constraints: 3905393b)
 com.google.errorprone:error_prone_type_annotations:2.13.1 (1 constraints: 24114cc9)
@@ -86,8 +86,7 @@ org.hamcrest:hamcrest-core:2.2 (4 constraints: 2b2b359e)
 org.hamcrest:hamcrest-library:2.2 (1 constraints: fc138e38)
 org.immutables:value:2.8.8 (1 constraints: 14051536)
 org.inferred:freebuilder:1.14.6 (1 constraints: 3e053b3b)
-org.mockito:mockito-core:4.5.1 (4 constraints: a4328ec8)
-org.mockito:mockito-errorprone:4.5.1 (1 constraints: 0c050f36)
+org.mockito:mockito-core:4.5.1 (3 constraints: ec24cefa)
 org.objenesis:objenesis:3.2 (2 constraints: 9a17f457)
 org.ow2.asm:asm:9.3 (3 constraints: e92232eb)
 org.pcollections:pcollections:3.1.4 (1 constraints: f51029b8)