docs: Remove boost from dependencies and build instructions

(Internal change: 2344867)

Author: sunyab

BUILDING.md

@@ -36,7 +36,6 @@ Some examples:
 cmake                                       \
 -DTBB_ROOT_DIR=/path/to/tbb                 \
 -DOPENSUBDIV_ROOT_DIR=/path/to/opensubdiv   \
--DBOOST_ROOT=/path/to/boost                 \
 /path/to/USD/source
 
 cmake --build . --target install -- -j <NUM_CORES>
@@ -51,7 +50,6 @@ cmake                                       \
 -G "Xcode"                                  \
 -DTBB_ROOT_DIR=/path/to/tbb                 \
 -DOPENSUBDIV_ROOT_DIR=/path/to/opensubdiv   \
--DBOOST_ROOT=/path/to/boost                 \
 /path/to/USD/source
 
 cmake --build . --target install -- -j <NUM_CORES>
@@ -67,7 +65,6 @@ build USD.
 -G "Visual Studio 15 2017 Win64"            ^
 -DTBB_ROOT_DIR=C:\path\to\tbb               ^
 -DOPENSUBDIV_ROOT_DIR=C:\path\to\opensubdiv ^
--DBOOST_ROOT=C:\path\to\boost               ^
 \path\to\USD\source
 
 cmake --build . --target install -- /m:%NUMBER_OF_PROCESSORS%
@@ -722,14 +719,7 @@ Client code can also override the default as needed.
 
 ## Build Issues FAQ
 
-1. Boost_NO_BOOST_CMAKE: 
-We currently set Boost_NO_BOOST_CMAKE=ON explicitly in USD builds for all 
-platforms to avoid issues with Boost config files (introduced in Boost version 
-1.70) and python, program options component requirements. If the user wants 
-to use Boost specified config files for their USD build, specify 
--DBoost_NO_BOOST_CMAKE=OFF when running cmake.
-
-2. Windows and Python 3.8+ (non-Anaconda)
+1. Windows and Python 3.8+ (non-Anaconda)
 Python 3.8 and later on Windows will no longer search PATH for DLL dependencies.
 Instead, clients can call `os.add_dll_directory(p)` to set paths to search.
 By default on that platform USD will iterate over PATH and add all paths using

README.md

@@ -75,7 +75,6 @@ Optional:
 
 Required:
  - [Python](https://python.org)
- - [Boost](https://boost.org)
 
 **usdview**
 

VERSIONS.md

@@ -17,7 +17,6 @@ Our test machines have the following software versions installed.
 | C++ Compiler  | gcc 9.3.1            | Apple clang 13.1.6 (Xcode 13.3)<br>Apple clang 15.0.0 (Xcode 15.4) for visionOS | Visual Studio 2017 15.9     |
 | CMake         | 3.17.5               | 3.19.5                       | 3.25.3                         |
 | Python        | 3.9.16               | 3.9.13                       | 3.9.13                         |
-| Boost         | 1.76.0               | 1.78.0                       | 1.76.0                         |
 | Intel TBB     | 2020 Update 3        | 2018 Update 1, 2020 Update 3 | 2020 Update 3                  |
 | OpenSubdiv    | 3.6.0                | 3.6.0                        | 3.6.0                          |
 | OpenImageIO   | 2.3.21.0             | 2.3.21.0                     | 2.3.21.0                       |

docs/doxygen/externalOverview.dox

@@ -105,7 +105,7 @@ Following is a deeper indexing of the four packages.
 
 - \ref tf_page_front module is a catch-all for low-level,
   commonly used services developed at Pixar, including facilities for memory
-  tracking, error reporting and debugging, string utilities, boost python
+  tracking, error reporting and debugging, string utilities, Python
   wrapping aids, threading/synchronization tools, registry and singleton
   management, smart pointers, and "observer pattern" support, which we call
   "notification".
@@ -128,9 +128,8 @@ Following is a deeper indexing of the four packages.
   is able to recognize and serialize.  It provides a copy-on-write
   array-type, VtArray, which is used for all array types in Usd, and an
   efficient type-erasure wrapper class, VtValue, that also provides datatype
-  conversion facilities and support for unboxing python objects from boost
-  python.  VtValue is supported in all Usd API for getting and setting
-  values.
+  conversion facilities and support for unboxing Python objects.
+  VtValue is supported in all Usd API for getting and setting values.
 
 - \ref work_page_front module provides a thin abstraction layer on top of
   Intel's TBB (Thread Building Blocks), and is leveraged extensively in Usd