Test always evaluates the same

Defect 105256 (STATIC_C)
Checker DEADCODE (subcategory redundant_test)
File: /src/mongo/db/index/index_access_method.cpp
Function mongo::AbstractIndexAccessMethod::commitBulk(mongo::OperationContext *, mongo::IndexAccessMethod::BulkBuilder *, bool, std::set<mongo::RecordId, std::less<mongo::RecordId>, std::allocator<mongo::RecordId>> *, std::vector<mongo::BSONObj, std::allocator<mongo::BSONObj>> *)
/src/mongo/db/index/index_access_method.cpp, line: 711
At condition "dupsAllowed", the value of "dupsAllowed" must be equal to 1.

            if (isDup && dupsAllowed && dupKeysInserted) {

/src/mongo/db/index/index_access_method.cpp, line: 711
Condition "dupsAllowed", taking true branch. Now the value of "dupsAllowed" is equal to 1.

            if (isDup && dupsAllowed && dupKeysInserted) {

/src/mongo/db/index/index_access_method.cpp, line: 676
Condition "dupsAllowed", taking true branch. Now the value of "dupsAllowed" is equal to 1.

                if (isDup && !dupsAllowed) {

/src/mongo/db/index/index_access_method.cpp, line: 711
The condition "dupsAllowed" must be true.

            if (isDup && dupsAllowed && dupKeysInserted) {