Revert "Use a forked repo for osqp-eigen."

This reverts commit 14baa1a.

Closes #18

Author: mmurooka

.github/workflows/ci.yaml

@@ -134,10 +134,7 @@ jobs:
             - path: coin-or/qpOASES
               options: -DBUILD_SHARED_LIBS=ON -DQPOASES_BUILD_EXAMPLES=OFF
             - path: osqp/osqp
-            # TODO Revert this change when https://github.com/isri-aist/QpSolverCollection/issues/18 is solved
-            # - path: robotology/osqp-eigen
-            - path: gergondet/osqp-eigen
-              ref: update-osqp-v1
+            - path: robotology/osqp-eigen
             - path: mmurooka/nasoq
               ref: cmake-install
               options: -DCMAKE_INSTALL_PREFIX=/usr/local -DNASOQ_BLAS_BACKEND=OpenBLAS -DNASOQ_USE_CLAPACK=ON -DNASOQ_BUILD_CLI=OFF -DNASOQ_BUILD_EXAMPLES=OFF -DNASOQ_BUILD_TESTS=OFF -DNASOQ_BUILD_DOCS=OFF