tests (mingw): remove Bash-specific pwd option

The -W option is only understood by MSYS2 Bash's pwd command. We already
make sure to override `pwd` by `builtin pwd -W` for MINGW, so let's not
double the effort here.

This will also help when switching the shell to another one (such as
BusyBox' ash) whose pwd does *not* understand the -W option.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

t/t2029-checkout-long-paths.sh

@@ -59,7 +59,7 @@ test_expect_success cleanup '
 '
 
 # check that the template used in the test won't be too long:
-abspath="$(pwd -W)"/testdir
+abspath="$(pwd)"/testdir
 test ${#abspath} -gt 230 ||
 test_set_prereq SHORTABSPATH
 

t/t3700-add.sh

@@ -403,7 +403,7 @@ test_expect_success 'all statuses changed in folder if . is given' '
 '
 
 test_expect_success MINGW 'path is case-insensitive' '
-	path="$(pwd -W)/BLUB" &&
+	path="$(pwd)/BLUB" &&
 	touch "$path" &&
 	downcased="$(echo "$path" | tr A-Z a-z)" &&
 	git add "$downcased"

t/t9902-completion.sh

@@ -126,12 +126,7 @@ invalid_variable_name='${foo.bar}'
 
 actual="$TRASH_DIRECTORY/actual"
 
-if test_have_prereq MINGW
-then
-	ROOT="$(pwd -W)"
-else
-	ROOT="$(pwd)"
-fi
+ROOT="$(pwd)"
 
 test_expect_success 'setup for __git_find_repo_path/__gitdir tests' '
 	mkdir -p subdir/subsubdir &&