Revert "Merge #10712: Add change output if necessary to reduce excess fee"

Summary:
This reverts commit 06c232f380610b2d39411a9b3372b25b3a36c8cc.

rpc_fundrawtransaction is broken on master.

Test Plan: test_runnery.py rpc_fundrawtransaction passes

Reviewers: deadalnix, Fabien, #bitcoin_abc, markblundeberg

Reviewed By: #bitcoin_abc, markblundeberg

Subscribers: markblundeberg, teamcity, schancel

Differential Revision: https://reviews.bitcoinabc.org/D2517