ci: Drop gst-indent-all as it's now managed by pre-commit

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5192>

scripts/check-format-c

@@ -1,16 +0,0 @@
-#!/bin/bash
-set -e
-
-CUR_DIR="$( cd -P "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-
-indent --version || true
-
-$CUR_DIR/gst-indent-all
-
-if git diff --quiet -- ':!subprojects/gst-integration-testsuites/medias' .; then
-    echo "Code is properly formatted"
-else
-    git diff --color=always -- ':!subprojects/gst-integration-testsuites/medias' .
-echo 'style diverges, please run gst-indent first'
-    exit 1
-fi

scripts/gst-indent-all

@@ -1,31 +0,0 @@
-#!/bin/bash
-
-BASEDIR=$(dirname $0)
-
-
-filter_cmd=("cat")
-if test -f ".indentignore"; then
-    filter_args=()
-    while read -r line; do
-        if test -n "$line"; then
-            filter_args+=("-e" "$line")
-        fi
-    done < ".indentignore"
-    if [[ ${#filter_args[@]} -gt 0 ]]; then
-        filter_cmd=("grep" "-v" "${filter_args[@]}")
-    fi
-fi
-git ls-files "*.c" | "${filter_cmd[@]}" | xargs -d '\n' $BASEDIR/gst-indent
-
-if test -f ".indent_cpp_list"; then
-    filter_args=()
-    while read -r line; do
-        if test -n "$line"; then
-            filter_args+=("-e" "$line")
-        fi
-    done < ".indent_cpp_list"
-    if [[ ${#filter_args[@]} -gt 0 ]]; then
-        filter_cmd=("grep" "-E" "${filter_args[@]}")
-        git ls-files "*.cpp" | "${filter_cmd[@]}" | xargs -d '\n' $BASEDIR/gst-indent
-    fi
-fi