Change Details

``` Speed up various tests: Remove unused nodes, which only consume time on start/stop Remove unused "bug workarounds" Remove the need for miniwallet.generate() by adding miniwallet.scan_blocks(). (On my system, with valgrind, generating 105 blocks takes 3.31 seconds. Rescanning 5 blocks takes 0.11 seconds.) ``` Backport of core#21200.

``` Speed up various tests: Remove unused nodes, which only consume time on start/stop Remove unused "bug workarounds" Remove the need for miniwallet.generate() by adding miniwallet.scan_blocks(). (On my system, with valgrind, generating 105 blocks takes 3.31 seconds. Rescanning 5 blocks takes 0.11 seconds.) ``` Backport of [[https://github.com/bitcoin/bitcoin/pull/21200 | core#21200]].

``` Speed up various tests: Remove unused nodes, which only consume time on start/stop Remove unused "bug workarounds" Remove the need for miniwallet.generate() by adding miniwallet.scan_blocks(). (On my system, with valgrind, generating 105 blocks takes 3.31 seconds. Rescanning 5 blocks takes 0.11 seconds.) ``` Backport of [[https://github.com/bitcoin/bitcoin/pull/21200 | core#21200]].