remove unneeded assertion

Author: eggplantzzz

packages/compile-solidity-tests/test/compileWithPragmaAnalysis.ts

@@ -133,9 +133,6 @@ describe("compileWithPragmaAnalysis", function () {
         options: config,
         paths: [path.join(sourceDirectory, "withImports", "C.sol")]
       });
-      if (!compilations) {
-        assert.fail("Compilations were not created.");
-      }
       assert.equal(compilations.length, 1);
       assert(compilations[0].compiler.version!.startsWith("0.6.12"));
     });