Replace runTestCase with assert.throws [test/language/expressions]

test/language/expressions/assignment/11.13.1-1-1.js

test/language/expressions/assignment/11.13.1-1-2.js

test/language/expressions/assignment/11.13.1-1-3.js

test/language/expressions/assignment/11.13.1-1-4.js

test/language/expressions/assignment/11.13.1-1-6-s.js

test/language/expressions/assignment/11.13.1-1-s.js

test/language/expressions/assignment/11.13.1-2-s.js

test/language/expressions/assignment/11.13.1-3-s.js

test/language/expressions/assignment/11.13.1-4-14-s.js

test/language/expressions/assignment/11.13.1-4-3-s.js

test/language/expressions/assignment/11.13.1-4-30-s.js

test/language/expressions/assignment/11.13.1-4-6-s.js

test/language/expressions/assignment/8.14.4-8-b_2.js

test/language/expressions/call/11.2.3-3_1.js

test/language/expressions/call/11.2.3-3_2.js

test/language/expressions/call/11.2.3-3_3.js

test/language/expressions/call/11.2.3-3_4.js

test/language/expressions/call/11.2.3-3_5.js

test/language/expressions/call/11.2.3-3_6.js

test/language/expressions/call/11.2.3-3_7.js