Remove debug prints and fix scotch path. #537

Job	Run time
mmg-debug / ci (ubuntu-20.04, on, off, on, off, int32_t)	1m 14s
mmg-debug / ci (ubuntu-20.04, on, off, off, off, int32_t)	24m 14s
mmg-debug / ci (ubuntu-20.04, off, off, on, off, int32_t)	1m 10s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int32_t)	22m 28s
mmg-debug / ci (macos-12, on, off, on, off, int32_t)	2m 14s
mmg-debug / ci (macos-12, on, off, off, off, int32_t)	17m 58s
mmg-debug / ci (macos-12, off, off, on, off, int32_t)	1m 41s
mmg-debug / ci (macos-12, off, off, off, off, int32_t)	24m 40s
mmg-debug / ci (ubuntu-20.04, off, off, off, on, int32_t)	3m 48s
mmg-debug / ci (macos-12, off, off, off, on, int32_t)	10m 41s
mmg-debug / ci (ubuntu-20.04, off, on, on, off, int32_t)	1m 7s
mmg-debug / ci (macos-12, off, on, on, off, int32_t)	1m 59s
mmg-debug / ci (windows-2022, off, off, off, off, int32_t)	27m 51s
mmg-debug / ci (windows-2022, on, off, off, off, int32_t)	26m 34s
mmg-debug / ci (windows-2022, off, on, off, off, int32_t)	25m 49s
mmg-debug / ci (ubuntu-20.04, on, on, on, on, int64_t)	2m 26s
mmg-debug / ci (ubuntu-20.04, off, off, on, on, int64_t)	1m 35s
mmg-debug / ci (ubuntu-20.04, off, off, off, off, int64_t)	2m 10s
mmg-debug / ci (macos-12, on, on, on, on, int64_t)	3m 50s
mmg-debug / ci (macos-12, off, off, off, off, int64_t)	4m 25s
mmg-debug / ci (windows-2022, on, on, off, off, int64_t)	4m 52s
mmg-debug / ci (windows-2022, off, off, off, off, int64_t)	5m 57s
	3h 38m 43s

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