build/pkgs/ipython/dependencies: drop jinja2

IPython itself no longer depends on jinja2 after nbconvert was
factored out of it.

Author: orlitzky

build/pkgs/ipython/dependencies

@@ -1,4 +1,4 @@
- jinja2 tornado pyzmq pickleshare simplegeneric traitlets decorator wcwidth prompt_toolkit pygments pexpect appnope backcall jedi stack_data | $(PYTHON_TOOLCHAIN) $(PYTHON)
+tornado pyzmq pickleshare simplegeneric traitlets decorator wcwidth prompt_toolkit pygments pexpect appnope backcall jedi stack_data | $(PYTHON_TOOLCHAIN) $(PYTHON)
 
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