legacy tests: migrate test46

src/nvim/testdir/test46.in

@@ -1,27 +0,0 @@
-Tests for multi-line regexps with ":s". vim: set ft=vim :
-
-STARTTEST
-:" test if replacing a line break works with a back reference
-:/^1/,/^2/s/\n\(.\)/ \1/
-:" test if inserting a line break works with a back reference
-:/^3/,/^4/s/\(.\)$/\r\1/
-:" test if replacing a line break with another line break works
-:/^5/,/^6/s/\(\_d\{3}\)/x\1x/
-:/^1/,$w! test.out
-:qa!
-ENDTEST
-
-1 aa
-bb
-cc
-2 dd
-ee
-3 ef
-gh
-4 ij
-5 a8
-8b c9
-9d
-6 e7
-77f
-xxxxx

src/nvim/testdir/test46.ok

@@ -1,13 +0,0 @@
-1 aa bb cc 2 dd ee
-3 e
-f
-g
-h
-4 i
-j
-5 ax8
-8xb cx9
-9xd
-6 ex7
-7x7f
-xxxxx