Revert Qiskit dependency change for CI (#1325)

The change in #1323 isn't working with tox 4. Since Qiskit's
`qiskit_pkg` will be removed very soon, it's easier for us to revert
back to `qiskit-terra` as the dependency temporarily until the update.

requirements-dev.txt

@@ -1,4 +1,4 @@
-qiskit>=0.45.0
+qiskit-terra>=0.45.0
 black~=22.0
 fixtures
 stestr

tox.ini

@@ -41,7 +41,6 @@ setenv =
   QISKIT_TEST_CAPTURE_STREAMS=1
 deps =
   git+https://github.com/Qiskit/qiskit
-  git+https://github.com/Qiskit/qiskit#subdirectory=qiskit_pkg
   -r{toxinidir}/requirements-dev.txt
   -r{toxinidir}/requirements-extras.txt
 passenv =
@@ -116,7 +115,6 @@ passenv =
   VERSION_STRING
 deps =
   git+https://github.com/Qiskit/qiskit
-  git+https://github.com/Qiskit/qiskit#subdirectory=qiskit_pkg
   -r{toxinidir}/requirements-dev.txt
   -r{toxinidir}/requirements-extras.txt
 commands =