Minor changes after code review

test/libsolidity/semanticTests/operators/custom/all_operators.sol

@@ -79,8 +79,6 @@ contract C {
     function test_geq(int128 x) public pure returns (bool) { return w(x) >= w(2); }
 }
 
-// ====
-// compileViaYul: also
 // ----
 // test_bitor() -> 10
 // test_bitand() -> 10

test/libsolidity/semanticTests/operators/custom/fixedpoint.sol

@@ -18,7 +18,5 @@ contract C {
         return value + value * percentage;
     }
 }
-// ====
-// compileViaYul: also
 // ----
 // applyInterest(int128,int128): 500000000000000000000, 100000000000000000 -> 550000000000000000000

test/libsolidity/semanticTests/operators/custom/operator_bound_for_two_types.sol

@@ -22,8 +22,6 @@ contract C {
     }
 }
 
-// ====
-// compileViaYul: also
 // ----
 // f() -> 1
 // g() -> 2

test/libsolidity/semanticTests/operators/custom/operator_bound_inside_contracts.sol

@@ -36,8 +36,6 @@ contract C {
     }
 }
 
-// ====
-// compileViaYul: also
 // ----
 // test1() -> 1
 // test2() -> 2

test/libsolidity/semanticTests/operators/custom/operator_bound_to_function_imported_transitively.sol

@@ -1,5 +1,4 @@
 ==== Source: a.sol ====
-pragma abicoder v2;
 library L {
     type Int is int128;
 
@@ -8,21 +7,17 @@ library L {
     }
 }
 ==== Source: b.sol ====
-pragma abicoder v2;
 import "a.sol" as a;
 ==== Source: c.sol ====
-pragma abicoder v2;
 import "b.sol" as b;
 
 contract C {
     using {b.a.L.add as +} for b.a.L.Int;
 
     function f() pure public returns (b.a.L.Int) {
-	return b.a.L.Int.wrap(0) + b.a.L.Int.wrap(0);
+        return b.a.L.Int.wrap(0) + b.a.L.Int.wrap(0);
     }
 }
 
-// ====
-// compileViaYul: also
 // ----
 // f() -> 7