Because SymEngine 0.10, undoing 8456

[1ucian0]

Waiting for SymEngine 0.10 (milestone) to be released, this PR undoes https://github.com/Qiskit/qiskit-terra/pull/8456/files

[qiskit-bot]

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[nkanazawa1989]

Similar issue and #8232 is also waiting for symengine 0.10.

[nkanazawa1989]

Nice! Finally we get symengine 0.10 :)

[nkanazawa1989]

An thoughts? @1ucian0
#9857 (review)

[1ucian0]

on hold until we decide what to do with py37 support (see #9857 (review))

[coveralls]

Pull Request Test Coverage Report for Build 4542506747

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 195 unchanged lines in 21 files lost coverage.
• Overall coverage increased (+0.006%) to 85.344%

---

Files with Coverage Reduction	New Missed Lines	%
qiskit/algorithms/time_evolvers/variational/var_qite.py	1	94.74%
qiskit/circuit/add_control.py	1	97.2%
qiskit/circuit/library/arithmetic/adders/vbe_ripple_carry_adder.py	1	98.55%
qiskit/circuit/library/standard_gates/p.py	1	98.9%
qiskit/transpiler/passes/synthesis/unitary_synthesis.py	1	94.68%
qiskit/circuit/controlflow/control_flow.py	2	85.71%
qiskit/circuit/controlledgate.py	2	97.78%
qiskit/extensions/quantum_initializer/squ.py	2	80.0%
qiskit/circuit/gate.py	3	96.51%
qiskit/circuit/library/n_local/two_local.py	3	89.47%

Totals
Change from base Build 4541449265:	0.006%
Covered Lines:	67055
Relevant Lines:	78570

---

💛 - Coveralls

[1ucian0]

symengine updated their wheels to have py37. So removing on hold

[coveralls]

Pull Request Test Coverage Report for Build 6391429351

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• 25 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.01%) to 87.003%

---

Files with Coverage Reduction	New Missed Lines	%
crates/qasm2/src/expr.rs	1	93.76%
crates/qasm2/src/lex.rs	6	90.91%
crates/qasm2/src/parse.rs	18	96.67%

Totals
Change from base Build 6387639473:	-0.01%
Covered Lines:	74145
Relevant Lines:	85221

---

💛 - Coveralls