X87: Remove dead code for inline string hashing.

src/x87/code-stubs-x87.h

Index: src/x87/code-stubs-x87.h
diff --git a/src/x87/code-stubs-x87.h b/src/x87/code-stubs-x87.h
index 67f229305b6c29f2756138ff39ccd4f2a6cdc5c3..9939bab35dd49665ee99e13c78fdfd51b333b2db 100644
--- a/src/x87/code-stubs-x87.h
+++ b/src/x87/code-stubs-x87.h
@@ -28,21 +28,6 @@ class StringHelper : public AllStatic {
                                      Register scratch,
                                      String::Encoding encoding);
 
-  // Generate string hash.
-  static void GenerateHashInit(MacroAssembler* masm,
-                               Register hash,
-                               Register character,
-                               Register scratch);
-
-  static void GenerateHashAddCharacter(MacroAssembler* masm,
-                                       Register hash,
-                                       Register character,
-                                       Register scratch);
-
-  static void GenerateHashGetHash(MacroAssembler* masm,
-                                  Register hash,
-                                  Register scratch);
-
   // Compares two flat ASCII strings and returns result in eax.
   static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm,
                                               Register left, Register right,