Remove debian/patches for v1.47.1-rc1 release #92

Job	Run time
Build and test with ASAN enabled	2m 58s
Build and test with clang	1m 53s
Build and test with gcc	1m 2s
Cross-compile for Android (aarch64)	39s
Cross-compile for Android (armv7a)	38s
Build and test with gcc -m32	1m 16s
Build and test on macOS	1m 17s
Cross-compile for Android (i686)	41s
Build and test with UBSAN enabled	1m 34s
Cross-compile for Android (x86_64)	41s
Build mke2fs on Windows with mingw32	2m 23s
Build mke2fs on Windows with mingw64	2m 48s
	17m 50s

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