remove edk2-basetools (#246)

## Description

Removes edk2-basetools from pip-requirements.txt and any usage of it in
the CISettings.py. The is done as there are changes in the build tools
python source code that are available locally in BaseTools (as it is
managed by Project Mu) that is not available in edk2-basetools.

- [ ] Impacts functionality?
- **Functionality** - Does the change ultimately impact how firmware
functions?
- Examples: Add a new library, publish a new PPI, update an algorithm,
...
- [ ] Impacts security?
- **Security** - Does the change have a direct security impact on an
application,
    flow, or firmware?
  - Examples: Crypto algorithm change, buffer overflow fix, parameter
    validation improvement, ...
- [ ] Breaking change?
- **Breaking change** - Will anyone consuming this change experience a
break
    in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo,
call
    a function in a new library class in a pre-existing module, ...
- [ ] Includes tests?
  - **Tests** - Does the change include any explicit test code?
  - Examples: Unit tests, integration tests, robot tests, ...
- [ ] Includes documentation?
- **Documentation** - Does the change contain explicit documentation
additions
    outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to
documentation
    on an a separate Web page, ...

## How This Was Tested

Verified the build system continues to use the local python source

## Integration Instructions

N/A - only effects this repository's CI system.

.pytool/CISettings.py

@@ -27,30 +27,19 @@ def __init__(self):
         self.ActualTargets = []
         self.ActualArchitectures = []
         self.ActualToolChainTag = ""
-        self.UseBuiltInBaseTools = None
         self.ActualScopes = None
 
     # ####################################################################################### #
     #                             Extra CmdLine configuration                                 #
     # ####################################################################################### #
 
     def AddCommandLineOptions(self, parserObj):
-        group = parserObj.add_mutually_exclusive_group()
-        group.add_argument("-force_piptools", "--fpt", dest="force_piptools", action="store_true", default=False, help="Force the system to use pip tools")
-        group.add_argument("-no_piptools", "--npt", dest="no_piptools", action="store_true", default=False, help="Force the system to not use pip tools")
-
         try:
             codeql_helpers.add_command_line_option(parserObj)
         except NameError:
             pass
 
     def RetrieveCommandLineOptions(self, args):
-        super().RetrieveCommandLineOptions(args)
-        if args.force_piptools:
-            self.UseBuiltInBaseTools = True
-        if args.no_piptools:
-            self.UseBuiltInBaseTools = False
-
         try:
             self.codeql = codeql_helpers.is_codeql_enabled_on_command_line(args)
         except NameError:
@@ -141,22 +130,6 @@ def GetActiveScopes(self):
 
             is_linux = GetHostInfo().os.upper() == "LINUX"
 
-            if self.UseBuiltInBaseTools is None:
-                # MU_CHANGE - redundant is_linux = GetHostInfo().os.upper() == "LINUX"
-                # try and import the pip module for basetools
-                try:
-                    import edk2basetools
-                    self.UseBuiltInBaseTools = True
-                except ImportError:
-                    self.UseBuiltInBaseTools = False
-                    pass
-
-            if self.UseBuiltInBaseTools == True:
-                scopes += ('pipbuild-unix',) if is_linux else ('pipbuild-win',)
-                logging.warning("Using Pip Tools based BaseTools")
-            else:
-                logging.warning("Falling back to using in-tree BaseTools")
-
             if is_linux and self.ActualToolChainTag.upper().startswith("GCC"):
                 if "AARCH64" in self.ActualArchitectures:
                     scopes += ("gcc_aarch64_linux",)

pip-requirements.txt

@@ -14,7 +14,6 @@
 
 edk2-pytool-library==0.21.2
 edk2-pytool-extensions==0.27.2
-edk2-basetools==0.1.49
 antlr4-python3-runtime==4.13.1
 regex
 pygount==1.6.1