Remove duplicate export

Author: hwpang

.github/workflows/CI.yml

@@ -32,8 +32,6 @@ jobs:
             julia -e 'using Pkg; Pkg.develop(Pkg.PackageSpec(path="../ReactionMechanismSimulator.jl/")); Pkg.build("ReactionMechanismSimulator");'
       - name: Run tests
         run: |
-            current_path=${{ github.workspace }}
-            export JULIA_CONDAPKG_ENV="$current_path/rms_env"
             julia -e 'using Pkg; Pkg.test("ReactionMechanismSimulator"; coverage=true)'
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v1