[gimp] devel-docs: delete various devel docs which are now in developer.gimp.org.

[Jehan <jehanp src gnome org>]

commit 62963aa748f4ca4db5dc4e3ebb54f96e9414aba8
Author: Jehan <jehan girinstud io>
Date:   Sat Oct 15 22:29:03 2022 +0200

    devel-docs: delete various devel docs which are now in developer.gimp.org.

 devel-docs/CODING_STYLE.md   | 963 -------------------------------------------
 devel-docs/HACKING.md        |   8 +-
 devel-docs/Makefile.am       |   2 -
 devel-docs/README.md         |  14 +-
 devel-docs/compositing.txt   | 274 ------------
 devel-docs/exif-handling.txt |  97 -----
 6 files changed, 11 insertions(+), 1347 deletions(-)
---
diff --git a/devel-docs/HACKING.md b/devel-docs/HACKING.md
index 8b59f59513..d3e298bf48 100644
--- a/devel-docs/HACKING.md
+++ b/devel-docs/HACKING.md
@@ -135,10 +135,10 @@ request or attach your patch to the report as a plain text file, not
 compressed.
 
 Please follow the guidelines for coding style and other requirements
-listed in [CODING_STYLE.md](CODING_STYLE.md). When you will contribute
-your first patches, you will notice that we care very much about clean
-and tidy code, which helps for understanding. Hence we care about coding
-style and consistency!
+listed in [CODING_STYLE.md](https://developer.gimp.org/core/coding_style/). When
+you will contribute your first patches, you will notice that we care very much
+about clean and tidy code, which helps for understanding. Hence we care about
+coding style and consistency!
 
 
 ## Auto-generated Files
diff --git a/devel-docs/Makefile.am b/devel-docs/Makefile.am
index f291f6e1e8..618ccb8281 100644
--- a/devel-docs/Makefile.am
+++ b/devel-docs/Makefile.am
@@ -7,12 +7,10 @@ SUBDIRS = \
        performance-logs
 
 EXTRA_DIST = \
-       CODING_STYLE.md                 \
        HACKING.md                      \
        README.md                       \
        contexts.txt                    \
        debug-plug-ins.txt              \
-       exif-handling.txt               \
        gitlab-milestones.txt           \
        includes.txt                    \
        libtool-instructions.txt        \
diff --git a/devel-docs/README.md b/devel-docs/README.md
index 201c9faa65..d229b6d2a1 100644
--- a/devel-docs/README.md
+++ b/devel-docs/README.md
@@ -383,7 +383,7 @@ Eventually we want to move this pipeline to Gitlab as well.
 
 When writing code, any core developer is expected to follow:
 
-- GIMP's [coding style](CODING_STYLE.md);
+- GIMP's [coding style](https://developer.gimp.org/core/coding_style/);
 - the [directory structure](#directory-structure-of-gimp-source-tree)
 - our [header file inclusion policy](includes.txt)
 
@@ -589,7 +589,7 @@ Developers are welcome to read the [specifications of XCF](specifications/xcf.tx
 Items in an image can be locked in various ways to prevent different
 types of edits.
 
-This is further explained in [the specifications of locks](specifications/locks.md).
+This is further explained in [the specifications of 
locks](https://developer.gimp.org/core/specifications/locks/).
 
 #### UI Framework
 
@@ -627,11 +627,11 @@ GIMP supports Exif, IPTC and XMP metadata as well as various image
 format-specific metadata. The topic is quite huge and complex, if not
 overwhelming.
 
-This [old document](exif-handling.txt) might be of interest (or maybe
-not, it has not been recently reviewed and might be widely outdated; in
-any case, it is not a complete document at all as we definitely do a lot
-more nowadays). **TODO**: review this document and delete or update it
-depending of whether it still makes sense.
+This [old document](https://developer.gimp.org/core/specifications/exif_handling/)
+might be of interest (or maybe not, it has not been recently reviewed and might
+be widely outdated; in any case, it is not a complete document at all as we
+definitely do a lot more nowadays). **TODO**: review this document and delete or
+update it depending of whether it still makes sense.
 
 #### Tagging