The electoral college is not a founding principle of the constitution. In fact, it's not even mentioned once in the constitution. The constitution isn't some stone tablet of laws and rules that can never be amended. Only an obvious dummy like yourself would probably think so.
Of course it's in the Constitution, FFS. Article II Section 1.
Section 1
The executive Power shall be vested in a President of the United States of America. He shall hold his Office during the Term of four Years, and, together with the Vice President, chosen for the same Term, be elected, as follows
Each State shall appoint, in such Manner as the Legislature thereof may direct, a Number of Electors, equal to the whole Number of Senators and Representatives to which the State may be entitled in the Congress: but no Senator or Representative, or Person holding an Office of Trust or Profit under the United States, shall be appointed an Elector.
The Electors shall meet in their respective States, and vote by Ballot for two Persons, of whom one at least shall not be an Inhabitant of the same State with themselves. And they shall make a List of all the Persons voted for, and of the Number of Votes for each; which List they shall sign and certify, and transmit sealed to the Seat of the Government of the United States, directed to the President of the Senate. The President of the Senate shall, in the Presence of the Senate and House of Representatives, open all the Certificates, and the Votes shall then be counted.
<etc>
That is the electoral college. Yes, you can amend the Constitution- good luck getting 38 States to vote to disenfranchise themselves...