Remove references to an old gyp variable that's no longer supported.

BUG=463660

Review URL: https://codereview.chromium.org/1318583002

Cr-Original-Commit-Position: refs/heads/master@{#345562}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: a1e4c970af90488466a54f29529b2741a433c104

common.gypi

@@ -1434,9 +1434,6 @@
     # TODO(thakis): Make this a blacklist instead, http://crbug.com/101600
     'enable_wexit_time_destructors%': 0,
 
-    # Build libpeerconnection as a static library by default.
-    'libpeer_target_type%': 'static_library',
-
     # Set to 1 to compile with the OpenGL ES 2.0 conformance tests.
     'internal_gles2_conform_tests%': 0,
 

isolate.gypi

@@ -89,7 +89,6 @@
         '--config-variable',
           'internal_gles2_conform_tests=<(internal_gles2_conform_tests)',
         '--config-variable', 'kasko=<(kasko)',
-        '--config-variable', 'libpeer_target_type=<(libpeer_target_type)',
         '--config-variable', 'lsan=<(lsan)',
         '--config-variable', 'msan=<(msan)',
         '--config-variable', 'target_arch=<(target_arch)',