Do not set a default InlineBackend configuration in spyder kernels.

This prevents user's matplotlib rc parameters from being clobbered when Spyder's "Activate support" is disabled. This makes sense because when disabled, a user should expect that Spyder does not interfere in any way.

spyder_kernels/console/start.py

@@ -93,28 +93,6 @@ def kernel_config():
             "del sys; del pdb"
         )
 
-    # Default inline backend configuration.
-    # This is useful to have when people doesn't
-    # use our config system to configure the
-    # inline backend but want to use
-    # '%matplotlib inline' at runtime
-    spy_cfg.InlineBackend.rc = {
-        # The typical default figure size is too large for inline use,
-        # so we shrink the figure size to 6x4, and tweak fonts to
-        # make that fit.
-        'figure.figsize': (6.0, 4.0),
-        # 72 dpi matches SVG/qtconsole.
-        # This only affects PNG export, as SVG has no dpi setting.
-        'figure.dpi': 72,
-        # 12pt labels get cutoff on 6x4 logplots, so use 10pt.
-        'font.size': 10,
-        # 10pt still needs a little more room on the xlabel
-        'figure.subplot.bottom': .125,
-        # Play nicely with any background color.
-        'figure.facecolor': 'white',
-        'figure.edgecolor': 'white'
-    }
-
     if is_module_installed('matplotlib'):
         spy_cfg.IPKernelApp.matplotlib = "inline"