ci: remove unnecessary file run_lint.sh

It's a leftover artifact that currently just acts as an unnecessary
intermediary script that calls the Makefile. It can be replaced by just
calling the Makefile directly.

.github/workflows/ci.yml

@@ -108,7 +108,7 @@ jobs:
 
       - if: "!cancelled()"
         name: lintcfull
-        run: ./ci/run_lint.sh lintcfull
+        run: make lintcfull
 
       - if: "!cancelled()"
         name: lintstylua
@@ -125,19 +125,19 @@ jobs:
 
       - if: "!cancelled()"
         name: lintlua
-        run: ./ci/run_lint.sh lintlua
+        run: make lintlua
 
       - if: "!cancelled()"
         name: lintpy
-        run: ./ci/run_lint.sh lintpy
+        run: make lintpy
 
       - if: "!cancelled()"
         name: lintsh
-        run: ./ci/run_lint.sh lintsh
+        run: make lintsh
 
       - if: "!cancelled()"
         name: check-single-includes
-        run: ./ci/run_lint.sh check-single-includes
+        run: make check-single-includes
 
       - name: Cache dependencies
         run: ./ci/before_cache.sh

.github/workflows/env.sh

@@ -9,7 +9,6 @@ EOF
 
 cat <<EOF >> "$GITHUB_ENV"
 CACHE_ENABLE=true
-CI_TARGET=tests
 CI_BUILD_DIR=$GITHUB_WORKSPACE
 BUILD_DIR=$GITHUB_WORKSPACE/build
 DEPS_BUILD_DIR=$HOME/nvim-deps
@@ -58,7 +57,6 @@ EOF
     DEPS_CMAKE_FLAGS="$DEPS_CMAKE_FLAGS -DUSE_BUNDLED_LUV=ON"
     cat <<EOF >> "$GITHUB_ENV"
 USE_BUNDLED=OFF
-CI_TARGET=lint
 EOF
     ;;
   functionaltest-lua)