Bugfixes & improve RTree delete performance #161

Job	Run time
Build extension binaries / Generate matrix	32s
Build extension binaries / DuckDB-Wasm (wasm_mvp, wasm32-emscripten)	40m 38s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	15m 31s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	59m 25s
Build extension binaries / DuckDB-Wasm (wasm_eh, wasm32-emscripten)	38m 47s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	18m 17s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	31m 0s
Build extension binaries / Windows (windows_amd64_rtools, x64-mingw-static)	1h 30m 1s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	35m 21s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	36m 2s
Build extension binaries / DuckDB-Wasm (wasm_threads, wasm32-emscripten)	39m 8s
Deploy extension binaries	0s
	6h 44m 42s

Provide feedback