Remove public read() function.

It isn't used outside the compiler.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=154685910

src/com/google/javascript/jscomp/Compiler.java

@@ -878,7 +878,7 @@ <T> T runInCompilerThread(Callable<T> callable) {
   private void compileInternal() {
     setProgress(0.0, null);
     CompilerOptionsPreprocessor.preprocess(options);
-    read();
+    readInputs();
     // Guesstimate.
     setProgress(0.02, "read");
     parse();
@@ -934,10 +934,6 @@ private void instrumentForCoverage(boolean instrumentBranchCoverage) {
     stopTracer(tracer, "instrumentationPass");
   }
 
-  public void read() {
-    readInputs();
-  }
-
   public void parse() {
     parseInputs();
   }