t4013: switch default branch name to main

Remove one of the last remaining uses of
"TEST_GIT_DEFAULT_INITIAL_BRANCH= main" in the test suite. We have
been steadily be converting tests from using "master" as the default
branch name since the introduction of TEST_GIT_DEFAULT_INITIAL_BRANCH
in 704fed9ea22 (tests: start moving to a different default main branch
name, 2020-10-23) The changes here are purely mechanical replacing
"master" with "main"

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 0 insertions, 170 deletions

diff --git a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master b/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
deleted file mode 100644
index c7677c5951..0000000000
--- a/t/t4013/diff.format-patch_--inline_--stdout_--subject-prefix=TESTCASE_initial..master
+++ /dev/null
@@ -1,170 +0,0 @@
-$ git format-patch --inline --stdout --subject-prefix=TESTCASE initial..master
-From 1bde4ae5f36c8d9abe3a0fce0c6aab3c4a12fe44 Mon Sep 17 00:00:00 2001
-From: A U Thor <author@example.com>
-Date: Mon, 26 Jun 2006 00:01:00 +0000
-Subject: [TESTCASE 1/3] Second
-MIME-Version: 1.0
-Content-Type: multipart/mixed; boundary="------------g-i-t--v-e-r-s-i-o-n"
-
-This is a multi-part message in MIME format.
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/plain; charset=UTF-8; format=fixed
-Content-Transfer-Encoding: 8bit
-
-
-This is the second commit.
----
- dir/sub | 2 ++
- file0   | 3 +++
- file2   | 3 ---
- 3 files changed, 5 insertions(+), 3 deletions(-)
- delete mode 100644 file2
-
-
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/x-patch; name="0001-Second.patch"
-Content-Transfer-Encoding: 8bit
-Content-Disposition: inline; filename="0001-Second.patch"
-
-diff --git a/dir/sub b/dir/sub
-index 35d242b..8422d40 100644
---- a/dir/sub
-+++ b/dir/sub
-@@ -1,2 +1,4 @@
- A
- B
-+C
-+D
-diff --git a/file0 b/file0
-index 01e79c3..b414108 100644
---- a/file0
-+++ b/file0
-@@ -1,3 +1,6 @@
- 1
- 2
- 3
-+4
-+5
-+6
-diff --git a/file2 b/file2
-deleted file mode 100644
-index 01e79c3..0000000
---- a/file2
-+++ /dev/null
-@@ -1,3 +0,0 @@
--1
--2
--3
-
---------------g-i-t--v-e-r-s-i-o-n--
-
-
-
-From 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0 Mon Sep 17 00:00:00 2001
-From: A U Thor <author@example.com>
-Date: Mon, 26 Jun 2006 00:02:00 +0000
-Subject: [TESTCASE 2/3] Third
-MIME-Version: 1.0
-Content-Type: multipart/mixed; boundary="------------g-i-t--v-e-r-s-i-o-n"
-
-This is a multi-part message in MIME format.
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/plain; charset=UTF-8; format=fixed
-Content-Transfer-Encoding: 8bit
-
----
- dir/sub | 2 ++
- file1   | 3 +++
- 2 files changed, 5 insertions(+)
- create mode 100644 file1
-
-
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/x-patch; name="0002-Third.patch"
-Content-Transfer-Encoding: 8bit
-Content-Disposition: inline; filename="0002-Third.patch"
-
-diff --git a/dir/sub b/dir/sub
-index 8422d40..cead32e 100644
---- a/dir/sub
-+++ b/dir/sub
-@@ -2,3 +2,5 @@ A
- B
- C
- D
-+E
-+F
-diff --git a/file1 b/file1
-new file mode 100644
-index 0000000..b1e6722
---- /dev/null
-+++ b/file1
-@@ -0,0 +1,3 @@
-+A
-+B
-+C
-
---------------g-i-t--v-e-r-s-i-o-n--
-
-
-
-From c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a Mon Sep 17 00:00:00 2001
-From: A U Thor <author@example.com>
-Date: Mon, 26 Jun 2006 00:03:00 +0000
-Subject: [TESTCASE 3/3] Side
-MIME-Version: 1.0
-Content-Type: multipart/mixed; boundary="------------g-i-t--v-e-r-s-i-o-n"
-
-This is a multi-part message in MIME format.
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/plain; charset=UTF-8; format=fixed
-Content-Transfer-Encoding: 8bit
-
----
- dir/sub | 2 ++
- file0   | 3 +++
- file3   | 4 ++++
- 3 files changed, 9 insertions(+)
- create mode 100644 file3
-
-
---------------g-i-t--v-e-r-s-i-o-n
-Content-Type: text/x-patch; name="0003-Side.patch"
-Content-Transfer-Encoding: 8bit
-Content-Disposition: inline; filename="0003-Side.patch"
-
-diff --git a/dir/sub b/dir/sub
-index 35d242b..7289e35 100644
---- a/dir/sub
-+++ b/dir/sub
-@@ -1,2 +1,4 @@
- A
- B
-+1
-+2
-diff --git a/file0 b/file0
-index 01e79c3..f4615da 100644
---- a/file0
-+++ b/file0
-@@ -1,3 +1,6 @@
- 1
- 2
- 3
-+A
-+B
-+C
-diff --git a/file3 b/file3
-new file mode 100644
-index 0000000..7289e35
---- /dev/null
-+++ b/file3
-@@ -0,0 +1,4 @@
-+A
-+B
-+1
-+2
-
---------------g-i-t--v-e-r-s-i-o-n--
-
-
-$