ci(test): remove parser cache

Since installation now installs parsers _and_ queries, caching parsers
doesn't allow skipping the installation step (and caching queries does
not pay off).

.github/workflows/test-core.yml

@@ -31,26 +31,14 @@ jobs:
         run: |
           bash ./scripts/ci-install.sh
 
-      - if: inputs.type == 'generate'
-        name: Generate and compile parsers
-        run: $NVIM -l ./scripts/install-parsers.lua --generate --max-jobs=2
-
-      - if: inputs.type == 'build'
-        name: Setup Parsers Cache
-        id: parsers-cache
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.local/share/nvim/site/parser/
-            ~/AppData/Local/nvim-data/site/parser/
-          key: parsers-${{ join(matrix.*, '-') }}-${{ hashFiles(
-            './lua/nvim-treesitter/install.lua',
-            './lua/nvim-treesitter/parsers.lua') }}
-
       - if: inputs.type == 'build'
         name: Compile parsers
         run: $NVIM -l ./scripts/install-parsers.lua
 
+      - if: inputs.type == 'generate'
+        name: Generate and compile parsers
+        run: $NVIM -l ./scripts/install-parsers.lua --generate --max-jobs=2
+
       - name: Check parsers
         run: $NVIM -l ./scripts/check-parsers.lua