[test][llvm-dwarfdump] Remove pointless CHECK-NOT lines

The original line was there from when this test was added, but it is
checking for a switch that doesn't exist, so really has no purpose, at
least any more.

llvm-svn: 363833

Author: jh7370

llvm/test/tools/llvm-dwarfdump/cmdline.test

@@ -1,7 +1,6 @@
 RUN: llvm-dwarfdump -h 2>&1 | FileCheck --check-prefix=HELP %s --implicit-check-not=out-file
 RUN: llvm-dwarfdump --help 2>&1 | FileCheck --check-prefix=HELP %s --implicit-check-not=out-file
 HELP: USAGE: llvm-dwarfdump{{[^ ]*}} [options] <input object files or .dSYM bundles>
-HELP-NOT: -reverse-iterate
 HELP: Color Options
 HELP: -color
 HELP: Section-specific Dump Options
@@ -22,7 +21,6 @@ HELP: -show-form
 HELP: -show-parents
 HELP: -statistics
 HELP: -summarize-types
-HELP-NOT: -reverse-iterate
 
 RUN: llvm-dwarfdump --version 2>&1 | FileCheck --check-prefix=VERSION %s
 VERSION: {{ version }}