Deletes DevMode specific linker hacks.

Change-Id: I4087ebc291a7f6dc219c93902f6b9429be5bf8d3
Makes sure StackTraceDeobfuscator respects file name.

We should trust the file name if it is a java file name as that means
compiler.stackMode is enabled. (Stack emulation always has the correct
file name unlike the Symbol map as it will incorrectly deobfuscate
anonymous functions in JSNI.)

Change-Id: Iefbc6cf1d3bb42fced46f2e5a4bd3ba74e6b3035